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American Lobster, Homarus americanus

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Short description of Homarus americanus, American Lobster

A clawed lobster similar to native European lobsters, but larger (up to 50cm length and weighing 20kg), with dark blue/green to green/brown body colour, red tint on claws and body, and green tint on walking legs. The presence of one or more small spines on the ventral margin of the rostrum is generally a reliable characteristic used to distinguish the American lobster from the European lobster, although this is very occasionally seen on European lobsters. 

Description of Homarus americanus, American Lobster status in GB

No established populations have been recorded, although 26 individuals were morphologically identified in the 23 years between 1988 and 2011 and it is assumed many more have been caught and not recorded. The records were predominantly in the south and southwest of England. 

Habitat summary: Homarus americanus, American Lobster

Inshore and offshore populations are found in the native range, inhabiting mud, bedrock, clay, cobble, eelgrass beds, peat reefs and occasionally sandy depressions.

Overview table

Environment: Marine
Species status: Non-Native
Native range: Labrador, New Brunswick, Newfoundland, Nova Scotia, Québec, Far East United States
Functional type: Predator
Status in England: Non-Native
Status in Scotland: Non-Native
Status in Wales: Non-Native
Location of first record: The Solent
Date of first record: 1988

Distribution map

Map of the UK with areas shaded to show the UK distribution of American Lobster

GB Distribution from NBN Atlas

Author's name:

Anna Yunnie

Last updated:

May 10th 2017

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