Oysters
Tio (rock oyster), Tio para (Bluff (dredge) oyster)
Ostrea chilensis, Saccostrea glomerata, Magallana gigasAlso known as Bluff oyster, Dredge oyster, Flat oyster, Rock oyster, Pacific oyster


New Zealand has three oysters worth knowing: the Bluff or dredge oyster (tio para), the native rock oyster (tio) and the introduced Pacific oyster. Rock and Pacific oysters are gathered by hand at low tide. Bluff oysters come from deeper beds, mainly in Foveaux Strait.
How to identify oysters
- Bluff (dredge) oyster: a heavy, pear-shaped oyster, usually 6–8 cm long and up to about 10 cm, with a cupped lower shell and a flat upper shell. It lies loose on the seabed rather than fixed to rocks.
- Rock oyster: a small, irregular oyster, up to about 8 cm long, cemented to rocks in clusters, mainly in sheltered northern harbours and estuaries.
- Pacific oyster: an introduced oyster, much larger and faster growing than the rock oyster. Farmed ones are usually 10–12 cm; wild ones can grow to 20 cm or more.
The Bluff oyster, also called the dredge or flat oyster, is the Chilean oyster, Ostrea chilensis. Adults lie loose on the seabed rather than being fixed to rock, and have a heavy, pear-shaped shell with a cupped lower half and a flat upper half. It has its own limit, minimum size and season, separate from rock and Pacific oysters.
The rock oyster (Saccostrea glomerata) is native, small (up to about 80 mm long) and cemented to rocks, and because it grows in clusters its shape varies a lot. The Pacific oyster (Magallana gigas, long known as Crassostrea gigas) arrived in New Zealand waters some time between 1950 and 1970 and is now the main farmed oyster. It is much bigger and faster growing than the rock oyster: NIWA says most are breeding by 6 to 8 cm, at 12 to 20 months, and wild ones can live several years and grow to 20 cm or more. Wild Pacific oysters now reach high densities on rocks and other hard surfaces in estuaries and harbours, where they may displace native species (Cawthron Institute). MPI's rules group rock and Pacific oysters together under one limit, so you don't need to separate them to stay legal.
Often confused with
- Pacific oyster vs rock oyster
Pacific oysters grow much larger and faster than the native rock oyster. Both are covered by the same limit.
- Bluff oyster vs Pacific oyster
Bluff oysters live loose on the seabed in deeper water and have a flat upper shell. Pacific and rock oysters are cemented to rocks or other oysters between the tides.
Size and daily limits
Minimum size (Bluff oysters)58 mmLimits for each area
| Area | Min. size | Daily limit |
|---|---|---|
| Auckland and Kermadec | None | Varies by sub-areaDetailsDredge (flat/Bluff) oyster: 50 per day, min 58 mm. Rock and Pacific oysters: 250 per day generally, 100 in the Auckland Coromandel area, no minimum size. Dredge oysters must be landed in the shell (may shuck ones eaten at sea, still counted). Rock and Pacific oysters must not be opened while still attached to the rock/object. A diver on a vessel may take extra limits for up to 2 dive-safety people on board. Closed in Te Mātā/Waipatukahu, Rehuotane Ki Tai (rock oyster), Marsden/Mair Banks and Ōmaha Bay/Kawau Bay/Whangaparāoa rock pools. |
| Central | None | Varies by sub-areaDetailsDredge oyster: 50 per day, min 58 mm. Rock and Pacific oysters: 250 per day, no minimum size. Dredge oysters must be landed in the shell (may shuck ones eaten at sea, still counted). Rock and Pacific oysters must not be opened while still attached to the rock/object. A diver on a vessel may take extra limits for up to 2 dive-safety people on board. |
| Challenger | None | Varies by sub-areaDetailsDredge oyster: 50 per day, min 58 mm. Rock and Pacific oysters: 250 per day, no minimum size. Diver dive-safety provision applies. |
| Kaikōura | None | Varies by sub-areaDetailsNot part of the 30 "all others" limit (oysters have national limits). Dredge oyster 50, min 58 mm; rock/Pacific 250, no minimum. South Island oyster closed season 1 Sep to end of Feb (reg 27), except hand-gathered dredge oysters (any time, any size, reg 127). Marfells Beach to Clarence Point (Challenger FMA): Pacific and dredge oysters any day. |
| South-East | 58 mm | Varies by sub-areaDetailsDredge oyster: 50 per day, min 58 mm, season 1 March to 31 August when taken by dredge or with underwater breathing apparatus. Hand-gathered dredge oysters (shore picking, free diving) have no size or season restriction (limit still applies per table). Rock/Pacific oysters: 250 per day, no minimum (national limit), closed 1 Sep to end of Feb (reg 27). |
| Fiordland | None | 0DetailsFlat/dredge oysters: no take allowed anywhere in the Fiordland Marine Area (low abundance). Rock/Pacific oysters: legally the national 250 per day, no minimum, closed 1 Sep to end of Feb (reg 27); rare or absent this far south. |
| Southland | 58 mm | Varies by sub-areaDetailsDredge oyster: 50 per day, min 58 mm, season 1 March to 31 August. Diver dive-safety provision applies. Rock/Pacific oysters: 250 per day, no minimum (national limit), closed 1 Sep to end of Feb (reg 27). |
Own daily limits for dredge and for rock/Pacific oysters where listed; otherwise "all others". Size in mm is shell size for dredge oysters (measurement method not stated on the area pages).
Closures in force (16)
Auckland and Kermadec5 closures
- Until 6 August 2028
Te Mātā and Waipatukahu (Ōtaki Creek to Diehard/Onepoto Stream, out 1 nm): cockles, mussels, oysters, pipi. From 7 Aug 2026.
- Until 28 June 2028
Marsden Bank and Mair Bank, Whangārei Harbour entrance: all shellfish, including kina, sea cucumbers and packhorse rock lobster (the notice defines shellfish as all echinoderms, molluscs and crustaceans). Pipi, scallop and spiny rock lobster are closed by other measures. From 29 Jun 2026.
- Until 11 March 2028
Ōmaha Bay, Kawau Bay and Whangaparāoa Peninsula: all invertebrates and seaweed in rock pools and out to 200 m offshore, from 12 Mar 2026. Kina excluded (normal limits apply); spiny rock lobster and scallops already closed.
- Until 25 June 2028
Rehuotane Ki Tai (Tutukaka Harbour, Ngunguru Bay, Ngunguru and Horahora Rivers): no taking cockle, crab, garfish, mussel, octopus, pāua, pipi, packhorse rock lobster, rock oyster, sea cucumber, sea horse, sea snail, starfish, tuatua; nets prohibited in harbour/rivers. From 26 Jun 2026.
- No end date
Standing shellfish restrictions (restricted areas list, no end date shown): Cheltenham Beach, Eastern Beach and Karekare Beach no shellfish gathering; Cockle Bay no taking of shellfish; Whangateau Harbour no cockles or pipi; Ngunguru Estuary no pipi and/or cockles; Te Puna mātaitai no green-lipped, blue or black mussels; Maunganui Bay (Deep Water Cove) no taking of any species except kina.
Central4 closures
- Until 15 December 2026
Western Taranaki (Tapuae Stream to Taungatara Stream, out 1 nm): all shellfish except rock lobster, seaweed (except beach-cast), sea anemones, stingrays and two conger eel species. From 16 Dec 2024.
- Until 25 July 2027
Tangoiro/Waihirere (Tairāwhiti, near Māwhai Point): all shellfish (incl. rock lobster) and finfish. From 26 Jul 2025.
- Until 25 July 2027
Motuoroi (Anaura Bay, Tairāwhiti): all shellfish (incl. rock lobster) and finfish. From 26 Jul 2025.
- Until 7 August 2027
Te Ohooho o Parapara rāhui: small box approx. 6 km north-east of the Port of Napier; any fish, aquatic life or seaweed. From 8 Aug 2025.
Kaikōura1 closure
- No end date
Oaro-Haumuri Taiāpure: closed to seaweed and shellfish except scampi, rock lobster, octopus and kina (pāua open in season at 2 per day).
South-East2 closures
- No end date
Lyttelton Harbour/Whakaraupō and Extension mātaitai: pāua closed at Gollans Bay, north-east Ōtamahua/Quail Island and Livingstone Bay to Godley Head; cockles closed at Walkers Beach (Quail Island) and Rec Bay; no shellfish from whata kaimoana (aquaculture structures); unlisted shellfish prohibited. Rāpaki mātaitai: all shellfish prohibited.
- No end date
Tuhawaiki (south of Timaru) and Te Ahi Tarakihi (north of Timaru) mātaitai reserves: all shellfish other than pāua, kina and kūtai (mussels) prohibited. Limits: pāua 3 (black-foot and yellow-foot), kina 20, kūtai 50 per person per day (MPI 973, in force 24 Jun 2019). Rock lobster treated as shellfish under the Fisheries Act definition (inferred, medium-high confidence). Waitarakao mātaitai (same notice) has no shellfish bylaws.
Fiordland1 closure
- No end date
No take or possession of scallops or flat/dredge oysters anywhere in the Fiordland Marine Area (low abundance).
Southland3 closures
- No end date
Pikomamaku (Womens Island) mātaitai reserve, North Tītī Islands: all fishing prohibited (fish, aquatic life, seaweed).
- No end date
Horomamae mātaitai reserve (waters north and north-east of Horomamae/Owen Island, east Stewart Island): all fish, aquatic life and seaweed closed 1 Jun to 31 Mar (open 1 Apr to 31 May only) (MPI 35, 2012).
- No end date
Kaihuka mātaitai reserve (waters around Kaihuka Island, Breaksea Islands group, east Stewart Island): all fish, aquatic life and seaweed closed 1 Jun to 31 Mar (open 1 Apr to 31 May only) (MPI 37, 2012).
Marine reserves and protected areas: no take57 areas
Poor Knights Islands Marine Reserve (Poor Knights Islands, about 22 km off the east coast of Northland (boats launch from Tutukaka); covers the sea 800 m out from all islands, islets, rocks and stacks). Marine reserve, no take: No fishing of any kind, from a boat or from shore; no taking or disturbing any marine life, including shellfish and seaweeds; no taking any part of the sea floor, including rocks and shells; no feeding fish.
Whangārei Harbour Marine Reserve (Two sites in Whangārei Harbour, Northland: Motukaroro (Passage) Island at Reotahi, and the Waikaraka mudflats and mangroves off Whangārei Heads Road). Marine reserve, no take: Don't take, disturb, kill or damage anything within the reserve.
Cape Rodney-Okakari Point Marine Reserve (Goat Island) (Cape Rodney to Okakari Point near Leigh, north of Warkworth, Auckland; waters 800 m from shore including Te Hāwere-a-Maki/Goat Island (pre-extension description)). Marine reserve, no take: Don't take, disturb, kill or damage anything within the reserve. Extended (Cape Rodney–Okakari Point Extension Marine Reserve) under the Hauraki Gulf / Tīkapa Moana Marine Protection Act 2025 from 25 Oct 2025; the old 800 m boundary no longer marks the edge, check the DOC map.
Tāwharanui Marine Reserve (Northern coast of the Tāwharanui Peninsula (Tāwharanui Regional Park), Rodney, about 90 km north of Auckland). Marine reserve, no take: Don't take, disturb, kill or damage anything within the reserve; no fishing; taking fossils prohibited.
Long Bay-Okura Marine Reserve (Long Bay to the Okura estuary, North Shore, about 20 km north of Auckland CBD). Marine reserve, no take: Don't take, disturb, kill or damage anything within the reserve.
Te Matuku Marine Reserve (Te Matuku Bay, far south-east corner of Waiheke Island, Hauraki Gulf, extending into Tāmaki Strait). Marine reserve, no take: Fishing, collecting, or disturbing marine organisms and resources are prohibited. Don't take, disturb, kill or damage anything within the reserve.
Mōtū Manawa-Pollen Island Marine Reserve (Inner Waitematā Harbour around Pollen and Traherne Islands, between Rosebank Peninsula and Waterview/Pt Chevalier, Auckland). Marine reserve, no take: Do not take or kill fish, crustaceans, shellfish, seaweed, shells, rocks or any other marine life; don't take, disturb, kill or damage anything within the reserve.
Te Whanganui-o-Hei/Cathedral Cove Marine Reserve (Cathedral Cove to Hahei, Mercury Bay, Coromandel). Marine reserve, no take: No fishing of any kind, from a boat or from shore; no taking or disturbing any marine life, including shellfish and seaweeds; no taking any part of the sea floor, including rocks and shells; no feeding fish. No discharge of waste/ballast/sewage. Extended (Te Whanganui-o-Hei / Cathedral Cove Extension Marine Reserve, Areas A and B) under the Hauraki Gulf / Tīkapa Moana Marine Protection Act 2025 from 25 Oct 2025; check the DOC map.
Tūhua (Mayor Island) Marine Reserve (Northern coast of Tūhua/Mayor Island, Bay of Plenty, from high-tide mark to 1 nm offshore between Turanginui Point and Tumutu Point). Marine reserve, no take: Don't take, disturb, kill or damage anything within the reserve. Reserve covers the northern coast only; elsewhere around the island normal rules apply, with set nets and long lines banned within 1 nm.
Te Paepae o Aotea (Volkner Rocks) Marine Reserve (Volkner Rocks, 5 km north-west of Whakaari/White Island and 55 km north of Whakatāne, Bay of Plenty). Marine reserve, no take: Fishing is not permitted. Don't take, disturb, kill or damage anything within the reserve.
Te Tapuwae o Rongokako Marine Reserve (Pouawa coast, about 16 km north of Gisborne, East Coast (access from SH35 at Pouawa)). Marine reserve, no take: Don't take, disturb, kill or damage anything within the reserve.
Te Angiangi Marine Reserve (Central Hawke's Bay coast between Aramoana and Blackhead, about 30 min from Waipukurau/Waipawa). Marine reserve, no take: No fishing, seaweed or shellfish gathering. All plant and animal life, alive or dead, totally protected; reefs and sea floor protected, nothing may be removed. Illegal to discharge firearms or harmful substances, or release non-native species; also an offence to pollute, litter, or erect a structure.
Parininihi Marine Reserve (North Taranaki coast at the Whitecliffs/Parininihi, north of Urenui (road access via Pukearuhe Road), including Pariokariwa reef). Marine reserve, no take: Illegal to take anything, including fish, shellfish, lobster, rocks, shells, driftwood or any other natural feature, plant or animal; don't take, disturb, kill or damage anything. Areas either side were left out of the reserve so customary and recreational fishing continue there.
Tapuae Marine Reserve (Taranaki coast just south-west of New Plymouth, adjoining Ngā Motu/Sugar Loaf Islands Marine Protected Area). Marine reserve, no take: No-take: no fishing of any kind, no shellfish gathering, no removal of rocks, shells, driftwood or plants; don't take, disturb, kill or damage anything. Adjoins the Ngā Motu/Sugar Loaf Islands Marine Protected Area, where some fishing is allowed (not a marine reserve).
Kapiti Marine Reserve (Between Kapiti Island and Paraparaumu/Waikanae beaches, Kapiti Coast, about 30 km from Wellington (two areas: inner/eastern and outer/western of the island)). Marine reserve, no take: Fishing within the marine reserve is not permitted. Don't take, disturb, kill or damage anything within the reserve.
Taputeranga Marine Reserve (Wellington south coast around Island Bay and Owhiro Bay, about 6 km from the city centre). Marine reserve, no take: Fishing and the removal or disturbance of any living or non-living marine resource is prohibited (except permitted monitoring/research).
Westhaven (Te Tai Tapu) Marine Reserve (Tidal sandflats and channels at the southern end of Whanganui Inlet, western Golden Bay; inlet entrance 19 km SW of Farewell Spit). Marine reserve, no take: Fishing and shooting are not permitted in the marine reserve. Don't take, disturb, kill or damage anything within the reserve.
Kahurangi Marine Reserve (Far NW South Island (West Coast region), 16 km of coast from Wekakura Point to Crayfish Point, about 5 km offshore; southern half reachable from the Heaphy Track). Marine reserve, no take: Don't take, disturb, kill or damage anything within the reserve - it's illegal.
Tonga Island Marine Reserve (Abel Tasman National Park coast, Nelson/Tasman, surrounding Tonga Island). Marine reserve, no take: Don't take, disturb, kill or damage anything within the reserve.
Horoirangi Marine Reserve (North of Nelson on the eastern side of Tasman Bay/Te Tai-o-Aorere, Glenduan to near Cable Bay (Ataata Point)). Marine reserve, no take: Don't take, disturb, kill or damage anything within the reserve - it's illegal. Fishing is not permitted within the reserve.
Long Island - Kokomohua Marine Reserve (Entrance to Queen Charlotte Sound, Marlborough Sounds, about 35 km from Picton; boat access only). Marine reserve, no take: Taking, disturbing, killing or damaging anything within the reserve is illegal.
Punakaiki Marine Reserve (West Coast, edge of Paparoa National Park, around Dolomite Point (Pancake Rocks), Perpendicular Point to near Maher Swamp, out to 2 nautical miles). Marine reserve, no take: Don't take, disturb, kill or damage anything within the reserve - it's illegal. Exception: eeling, whitebaiting and recreational fishing at river mouths allowed in two defined areas (not shellfish gathering on the reef).
Waiau Glacier Coast Marine Reserve (South Westland, about 11 km from Kohuamarua Bluff (near Ōkārito) south to Omoeroa Bluff, about 4 km offshore, incl. a short way up the Waiho River). Marine reserve, no take: Don't take, disturb, kill or damage anything within the reserve - it's illegal.
Tauparikākā Marine Reserve (Ship Creek visitor site, about 20 min drive north of Haast, South Westland). Marine reserve, no take: Don't take, disturb, kill or damage anything within the reserve.
Hautai Marine Reserve (Remote South Westland coast, from just south of Longridge Point about 6 km south to the Hacket River mouth, >1 km offshore; halfway between Jackson Bay and Milford Sound, 60 km from any road). Marine reserve, no take: Don't take, disturb, kill or damage anything within the reserve.
Hikurangi Marine Reserve (About 10 km south of Kaikōura near Goose Bay, extending offshore over the Kaikōura Canyon). Marine reserve, no take: No-take area: you may not remove or disturb any marine life, or take any other material, including shells from the beach, water or seabed.
Pōhatu Marine Reserve (Flea Bay, south-east (outer) coast of Banks Peninsula, Canterbury; 4WD-only land access). Marine reserve, no take: It is not permitted to take any animal or natural item from the reserve (fish, shellfish, shells, seaweed, rocks, driftwood).
Akaroa Marine Reserve (Mouth of Akaroa Harbour, Banks Peninsula, Canterbury; boat or kayak access). Marine reserve, no take: You are not permitted to take any animals or natural items from the reserve (fish, shellfish, shells, seaweed, rocks, driftwood).
Waitaki Marine Reserve (North Otago coast south of the Waitaki River; foreshore access limited (much via private land)). Marine reserve, no take: 'No take' area: all fishing (commercial, recreational, customary), taking or killing marine life, removing or disturbing marine life or materials, feeding fish, discarding fish waste. In force 1 Jul 2026 (Te Au Roa o Te Rakihouia network). Only exception is Ngāi Tahu Whānui wānaka (incl. wānaka hī ika with limited take); fish caught outside may be carried through.
Papanui Marine Reserve (Entirely offshore off the Otago Peninsula/Dunedin coast; boat access only). Marine reserve, no take: 'No take' area: all fishing (commercial, recreational, customary), taking or killing marine life, removing or disturbing marine life or materials, feeding fish, discarding fish waste. In force 1 Jul 2026 (Te Au Roa o Te Rakihouia network). Only exception is Ngāi Tahu Whānui wānaka (incl. wānaka hī ika with limited take); fish caught outside may be carried through.
Ōrau Marine Reserve (Dunedin coast, Harakeke Point to St Clair; accessible from Otago Peninsula beaches (Sandfly Bay to St Clair)). Marine reserve, no take: 'No take' area: all fishing (commercial, recreational, customary), taking or killing marine life, removing or disturbing marine life or materials, feeding fish, discarding fish waste. In force 1 Jul 2026 (Te Au Roa o Te Rakihouia network). Only exception is Ngāi Tahu Whānui wānaka (incl. wānaka hī ika with limited take); fish caught outside may be carried through.
Ōkaihae Marine Reserve (Around Ōkaihae/Green Island, offshore island (nature reserve) on the Otago coast south of Dunedin; boat access only). Marine reserve, no take: 'No take' area: all fishing (commercial, recreational, customary), taking or killing marine life, removing or disturbing marine life or materials, feeding fish, discarding fish waste. Landing on Ōkaihae (Green Island) without DOC permission prohibited. In force 1 Jul 2026 (Te Au Roa o Te Rakihouia network). Only exception is Ngāi Tahu Whānui wānaka (incl. wānaka hī ika with limited take); fish caught outside may be carried through.
Hākinikini Marine Reserve (Remote southern Otago coast; limited road access, walk in via Akatore Creek at low tide). Marine reserve, no take: 'No take' area: all fishing (commercial, recreational, customary), taking or killing marine life, removing or disturbing marine life or materials, feeding fish, discarding fish waste. In force 1 Jul 2026 (Te Au Roa o Te Rakihouia network). Only exception is Ngāi Tahu Whānui wānaka (incl. wānaka hī ika with limited take); fish caught outside may be carried through.
Ulva Island-Te Wharawhara Marine Reserve (Outer Paterson Inlet/Whaka ā Te Wera, east coast of Stewart Island/Rakiura, around Ulva Island). Marine reserve, no take: Fishing, or taking or disturbing anything that occurs naturally in the reserve; feeding fish; discharging pollutants or ballast water; introducing living organisms. Surrounded by Te Whaka a Te Wera (Paterson Inlet) mātaitai reserve, which has its own bylaws.
Piopiotahi (Milford Sound) Marine Reserve (Northern side of Milford Sound/Piopiotahi from the head of the sound to Dale Point). Marine reserve, no take: All marine life is totally protected. No fishing, netting, taking, or killing of marine life. No polluting, disturbance or damage. No removal of any natural thing from the marine reserve.
Te Hapua (Sutherland Sound) Marine Reserve (Sutherland Sound, northern Fiordland (shallow-sill entrance)). Marine reserve, no take: All marine life is totally protected. No fishing, netting, taking, or killing of marine life. No polluting, disturbance or damage. No removal of any natural thing from the marine reserve.
Hawea (Clio Rocks) Marine Reserve (Inner Bligh Sound/Hāwea, northern Fiordland). Marine reserve, no take: All marine life is totally protected. No fishing, netting, taking, or killing of marine life. No polluting, disturbance or damage. No removal of any natural thing from the marine reserve.
Kahukura (Gold Arm) Marine Reserve (Gold Arm, Charles Sound/Taiporoporo). Marine reserve, no take: All marine life is totally protected. No fishing, netting, taking, or killing of marine life. No polluting, disturbance or damage. No removal of any natural thing from the marine reserve.
Kutu Parera (Gaer Arm) Marine Reserve (Gaer Arm, Bradshaw Sound (Doubtful Sound complex), incl. Camelot River entrance estuary). Marine reserve, no take: All marine life is totally protected. No fishing, netting, taking, or killing of marine life. No polluting, disturbance or damage. No removal of any natural thing from the marine reserve.
Te Awaatu Channel (The Gut) Marine Reserve (The Gut channel, Doubtful Sound/Patea, near Secretary Island). Marine reserve, no take: All marine life is totally protected. No fishing, netting, taking, or killing of marine life. No polluting, disturbance or damage. No removal of any natural thing from the marine reserve.
Taipari Roa (Elizabeth Island) Marine Reserve (Around Elizabeth Island, inner Doubtful Sound/Patea). Marine reserve, no take: All marine life is totally protected. No fishing, netting, taking, or killing of marine life. No polluting, disturbance or damage. No removal of any natural thing from the marine reserve.
Moana Uta (Wet Jacket Arm) Marine Reserve (Entire length of Wet Jacket Arm, Dusky Sound/Tamatea complex). Marine reserve, no take: All marine life is totally protected. No fishing, netting, taking, or killing of marine life. No polluting, disturbance or damage. No removal of any natural thing from the marine reserve.
Taumoana (Five Fingers Peninsula) Marine Reserve (Beside Five Fingers Peninsula at the entrance to Tamatea/Dusky Sound (wave-exposed coast)). Marine reserve, no take: All marine life is totally protected. No fishing, netting, taking, or killing of marine life. No polluting, disturbance or damage. No removal of any natural thing from the marine reserve.
Te Tapuwae o Hua (Long Sound) Marine Reserve (Long Sound, Preservation Inlet, southern Fiordland). Marine reserve, no take: All marine life is totally protected. No fishing, netting, taking, or killing of marine life. No polluting, disturbance or damage. No removal of any natural thing from the marine reserve.
Aldermen Islands / Te Ruamahua (north) High Protection Area (waters around the northern Aldermen Islands, off Tairua, east Coromandel; boundary per SO plan in the Act, see DOC map). Hauraki Gulf / Tīkapa Moana Marine Protection Act 2025, in force 25 Oct 2025: no recreational or commercial fishing, including rock lobster and all other shellfish. Customary fishing allowed only with written authorisation from a tangata kaitiaki for a customary purpose (e.g. hui, tangi).
Aldermen Islands / Te Ruamahua (south) High Protection Area (waters around the southern Aldermen Islands, off Tairua, east Coromandel; boundary per SO plan in the Act, see DOC map). Hauraki Gulf / Tīkapa Moana Marine Protection Act 2025, in force 25 Oct 2025: no recreational or commercial fishing, including rock lobster and all other shellfish. Customary fishing allowed only with written authorisation from a tangata kaitiaki for a customary purpose (e.g. hui, tangi).
Cape Colville High Protection Area (off Cape Colville, northern tip of the Coromandel Peninsula (inside the Cape Colville SPA); boundary per SO plan in the Act, see DOC map). Hauraki Gulf / Tīkapa Moana Marine Protection Act 2025, in force 25 Oct 2025: no recreational or commercial fishing, including rock lobster and all other shellfish. Customary fishing allowed only with written authorisation from a tangata kaitiaki for a customary purpose (e.g. hui, tangi).
Kawau Bay High Protection Area (Kawau Bay, north of Auckland (inside the Kawau Bay SPA); boundary per SO plan in the Act, see DOC map). Hauraki Gulf / Tīkapa Moana Marine Protection Act 2025, in force 25 Oct 2025: no recreational or commercial fishing, including rock lobster and all other shellfish. Customary fishing allowed only with written authorisation from a tangata kaitiaki for a customary purpose (e.g. hui, tangi). Limited commercial ring-netting (kahawai, grey mullet, trevally, 1 Mar to 31 Aug, authorised existing operators only) is the only fishing exception; it does not apply to recreational fishers.
Mokohīnau Islands High Protection Area (around the Mokohīnau Islands, outer Hauraki Gulf; boundary per SO plan in the Act, see DOC map). Hauraki Gulf / Tīkapa Moana Marine Protection Act 2025, in force 25 Oct 2025: no recreational or commercial fishing, including rock lobster and all other shellfish. Customary fishing allowed only with written authorisation from a tangata kaitiaki for a customary purpose (e.g. hui, tangi).
Motukawao Islands High Protection Area (around the Motukawao Islands, western Coromandel coast; boundary per SO plan in the Act, see DOC map). Hauraki Gulf / Tīkapa Moana Marine Protection Act 2025, in force 25 Oct 2025: no recreational or commercial fishing, including rock lobster and all other shellfish. Customary fishing allowed only with written authorisation from a tangata kaitiaki for a customary purpose (e.g. hui, tangi).
Pakatoa and Tarahiki / Shag Island High Protection Area (around Pakatoa and Tarahiki/Shag Islands, east of Waiheke Island; boundary per SO plan in the Act, see DOC map). Hauraki Gulf / Tīkapa Moana Marine Protection Act 2025, in force 25 Oct 2025: no recreational or commercial fishing, including rock lobster and all other shellfish. Customary fishing allowed only with written authorisation from a tangata kaitiaki for a customary purpose (e.g. hui, tangi).
Rangitoto and Motutapu High Protection Area (around Rangitoto and Motutapu Islands, inner Hauraki Gulf; boundary per SO plan in the Act, see DOC map). Hauraki Gulf / Tīkapa Moana Marine Protection Act 2025, in force 25 Oct 2025: no recreational or commercial fishing, including rock lobster and all other shellfish. Customary fishing allowed only with written authorisation from a tangata kaitiaki for a customary purpose (e.g. hui, tangi). Limited commercial ring-netting (kahawai, grey mullet, trevally, 1 Mar to 31 Aug, authorised existing operators only) is the only fishing exception; it does not apply to recreational fishers.
Slipper Island / Whakahau High Protection Area (around Slipper Island/Whakahau, off Tairua-Pāuanui, east Coromandel; boundary per SO plan in the Act, see DOC map). Hauraki Gulf / Tīkapa Moana Marine Protection Act 2025, in force 25 Oct 2025: no recreational or commercial fishing, including rock lobster and all other shellfish. Customary fishing allowed only with written authorisation from a tangata kaitiaki for a customary purpose (e.g. hui, tangi).
Te Hauturu-o-Toi / Little Barrier Island High Protection Area (around Te Hauturu-o-Toi/Little Barrier Island, outer Hauraki Gulf; boundary per SO plan in the Act, see DOC map). Hauraki Gulf / Tīkapa Moana Marine Protection Act 2025, in force 25 Oct 2025: no recreational or commercial fishing, including rock lobster and all other shellfish. Customary fishing allowed only with written authorisation from a tangata kaitiaki for a customary purpose (e.g. hui, tangi).
The Noises High Protection Area (around The Noises islands, north-east of Rangitoto/Motutapu; boundary per SO plan in the Act, see DOC map). Hauraki Gulf / Tīkapa Moana Marine Protection Act 2025, in force 25 Oct 2025: no recreational or commercial fishing, including rock lobster and all other shellfish. Customary fishing allowed only with written authorisation from a tangata kaitiaki for a customary purpose (e.g. hui, tangi).
Tiritiri Matangi High Protection Area (around Tiritiri Matangi Island, off Whangaparāoa Peninsula (inside the Tiritiri Matangi SPA); boundary per SO plan in the Act, see DOC map). Hauraki Gulf / Tīkapa Moana Marine Protection Act 2025, in force 25 Oct 2025: no recreational or commercial fishing, including rock lobster and all other shellfish. Customary fishing allowed only with written authorisation from a tangata kaitiaki for a customary purpose (e.g. hui, tangi).
Kermadec Islands Marine Reserve (Rangitāhua): all waters around the islands and rocks out to 12 nautical miles. Marine reserve, no take of any marine life. Visits need a DOC permit.
Before you gather
- Check the MPI shellfish biotoxin alerts for the beach you're going to. Toxins can't be cooked out.
- Check for rāhui, mātaitai and other customary management areas, which can have their own limits or closures.
Checked 23 October 2026 · Source: MPI. Rules and closures change, so check the NZ Fishing Rules app before you gather.
Where it lives in New Zealand
Bluff oysters are found in small patches all around the coast, down to 35 m or more, but the big beds are in Foveaux Strait, Golden Bay and Tasman Bay. They are not something you can pick up on a beach walk in most places, though hand-gathering is allowed.
Rock oysters grow in clumps on rocks in sheltered harbours and estuaries, mainly in the north of the North Island. Pacific oysters are farmed in northern North Island estuaries, and wild ones cement themselves to rocks and other hard surfaces in the same way.
Rock and Pacific oysters can be gathered all year where open. In the South Island, oysters have a closed season, and Bluff oysters have their own season when taken by dredge or with scuba. Commercial Bluff oysters are harvested from Foveaux Strait in the colder months and sent around the country. MPI sets the season dates; see the rules by area below and MPI's scallop and oyster rules page.
- Jan: good
- Feb: good
- Mar: good
- Apr: good
- May: good
- Jun: good
- Jul: good
- Aug: good
- Sep: good
- Oct: good
- Nov: good
- Dec: good
How to gather it
Rock and Pacific oysters are gathered by hand at low tide. The rules are specific: you must not open an oyster while it is still attached to the rock or to another oyster, or leave the shells there. Knock or prise the oyster free, then open it away from the bed.
Bluff oysters can be hand-gathered by free divers or from the shore. Recreational dredging and diving with scuba for them is allowed in parts of the South Island, with a season, a minimum size and a limit; the details differ between hand-gathering and dredging, so read the notes in the table below. Dredge oysters must be landed in the shell, and any you eat at sea still count towards your limit. Divers on a boat can take extra limits for people on board acting as dive safety; the notes in the table give the details.
Respect rāhui and mātaitai. A rāhui is a customary ban on gathering, put in place by tangata whenua so a bed can recover; some are backed by an MPI temporary closure. Mātaitai reserves are managed by tangata whenua, and their bylaws can set lower limits or ban taking some species. MPI publishes the rules and maps for each customary management area.
Eating
Oysters are eaten raw or cooked. Te Ara notes that raw Bluff oysters are often described as salty and metallic, Pacific oysters as fruity, like cucumber, and the small native rock oyster as the sweetest of the three. Pacific oysters are available fresh all year, though their texture changes with the season.
Wild oysters are filter feeders, so they take up whatever is in the water, including algal toxins and sewage. Before you gather, check MPI's shellfish biotoxin alerts for that coast. Cooking does not destroy biotoxins. Avoid beds near stormwater drains and sewage outfalls, and don't gather after heavy rain, when runoff carries contaminants into harbours. Regional council water-quality reports, such as LAWA's Can I swim here? or Auckland's Safeswim, show where the water is poor.
Farmed and commercially harvested oysters come from areas that are classified and tested under New Zealand Food Safety's shellfish quality assurance programme, and are closed after rain or when toxins are detected. Wild oysters you gather yourself are not tested, which is why the alerts matter.
Symptoms of shellfish poisoning usually start between 10 minutes and 3 hours after eating, and include tingling around the mouth and in the fingers and toes, dizziness and difficulty breathing or swallowing. If you feel unwell, call Healthline on 0800 611 116 or get medical help straight away, and keep any leftovers for testing.
Recipes
- Tempura oysters with kelp and miso sauce (Seafood New Zealand)
Good to know
Most oysters New Zealanders eat are farmed. Aquaculture began in New Zealand waters in the 1980s, and Pacific oysters soon became plentiful.
Bluff oysters have been dredged in Foveaux Strait since 1863. The beds have been hit by the parasite Bonamia, which lives in the oyster's blood cells, with die-offs in the early 1930s, the early 1960s and from 1986 to 1992. More than a century of dredging has also destroyed most of the strait's mullock reefs, built from the skeletons of bryozoans, shellfish and sponges, where young oysters settle. Fisheries New Zealand research links the size of the beds to recruitment and Bonamia deaths.
Recreational gathering has dropped. MPI's national panel survey estimated that recreational fishers took about 84,000 oysters in 2022–23, against 186,000 in 2017–18 and 303,000 in 2011–12. These estimates come from a small number of households and are uncertain.
Bluff oysters brood their larvae inside the shell for 18 to 30 days before releasing them, can switch between male and female, live for eight years or more, and take four to six years to reach legal size.
Questions
When is Bluff oyster season?
MPI sets the season. The commercial Foveaux Strait harvest runs through the colder months, and the recreational rules for dredge oysters, including any season, differ between hand-gathering and dredging. See the limits by area below and MPI's scallop and oyster rules page.
What's the difference between rock oysters and Pacific oysters?
Rock oysters are native, small and cemented in clusters to rocks in northern harbours. Pacific oysters were introduced and grow much larger and faster. Both fall under the same limit.
Can I open oysters on the rocks?
No. You must not open an oyster while it is still attached to the rock or another oyster, or leave its shell there.
Are wild oysters safe to eat?
There's no blanket answer, because it depends on the water they came from. Check MPI's shellfish biotoxin alerts for that coast, avoid beds near outfalls, and don't gather after heavy rain. Cooking does not destroy biotoxins.



