CRUSTACEA : Decapoda : NephropidaeCRABS, SHRIMPS AND LOBSTERS

Homarus gammarus (Linnaeus, 1758)

Lobster


Homarus gammarus image: b09_5487
Homarus gammarus

Description: The lobster is a familiar crustacean to most people. In life they are blue in colour, with large claws, eight walking legs and a long body ending in a series of tail plates.

Habitat: Lobsters are most common in the infralittoral zone amongst boulders, but occur at all depths on rocky seabeds where they can find some shelter.

Distribution: A common species all round the coast, though in most areas numbers are seriously depleted by fishing.

Similar Species: The only other large crustacean with a similar shape is the crayfish Palinurus elephas.

Key Identification Features:

  • Blue coloration.
  • Two large claws, one a cutter and the other a crusher.

Distribution Map from NBN: Homarus gammarus at National Biodiversity Network mapping facility, data for UK.

iNaturalist: Homarus gammarus at iNaturalist World Species Observations database.

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 Picton, B.E., Keatley, L. & Morrow, C.C. (2026). Homarus gammarus. (Linnaeus, 1758). [In] Encyclopedia of Marine Life of Britain and Ireland.
https://habitas.org/mbdp/species.php?item=S23600. Accessed on 2026-11-01