Pacific oyster, Japanese oyster, Miyagi oyster, Portuguese oyster, Pacific cupped oyster, Immigrant oyster, Giant pacific oyster, Giant oyster, Giant cupped oyster

Magallana gigas

2,859Records since 2000

MayPeak month

51Counties with records

When it is recorded

Jan36

Feb170

Mar104

Apr151

May727

Jun512

Jul297

Aug159

Sep341

Oct246

Nov72

Dec39

GBIF records by month, 2000–2025 (all years combined).

#	County	Nation	Records
1	Devon	England	1,018
2	Cornwall	England	95
3	Ards and North Down	Northern Ireland	83
4	Plymouth	England	77
5	Dumfries and Galloway	Scotland	52
6	Isles of Scilly	England	47
7	Dorset	England	34
8	Highland	Scotland	31
9	Pembrokeshire	Wales	25
10	Swansea	Wales	24
11	Newry, Mourne and Down	Northern Ireland	23
12	East Lothian	Scotland	22
13	Fife	Scotland	22
14	Causeway Coast and Glens	Northern Ireland	22
15	Torbay	England	22

454 England14 Scotland32 Wales99 Northern Ireland

Records per county (GADM level 2) and per nation; one record can count towards several areas. 51 counties in all.

Records since 2000: 2,859
Peak month: May
Counties with records: 51
Scientific name: Magallana gigas
Group: Molluscs
NBN Atlas records since 2000: 2,411
Most recorded in: Devon, Cornwall, Ards and North Down, Plymouth, Dumfries and Galloway
Kingdom: Animalia
Phylum: Mollusca
Class: Bivalvia
Order: Ostreida
Family: Ostreidae
Genus: Magallana
Name with authority: Magallana gigas (Thunberg, 1793)
Described: 1793
Contributing datasets: 51