Rocky shores, UK invertebrates - marine
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Flat periwinkle (Littorina obtusata)
Periwinkles are a large family of gastropod molluscs found on the shore. The flat periwinkle is…
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Common mussel (Mytilus edulis)
The common mussel has a roughly triangular shell, which is bluish, purplish or brown in colour and…
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Velvet swimming crab (Necora puber)
The fast-moving velvet swimming crab has a flattened carapace, which is wider than it is long . The…
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Sea-spider (Nymphon gracile)
The sea-spiders, or pycogonids, are an unusual group of marine arthropods, which are completely…
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Common octopus (Octopus vulgaris)
The cephalopods (meaning ‘head-footed) are a group of molluscs that contain the octopuses, squid and…
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Common brittlestar (Ophiothrix fragilis)
Like all brittlestars, the common brittlestar has five long, slender arms, which radiate out from a…
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Native oyster (Ostrea edulis)
The native oyster is a bivalve mollusc, which means ‘two shells’, and is rough, scaly and…
More about the Native oyster »
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Common prawn (Palaemon serratus)
The common prawn is a well-known swimming crustacean, which is pinkish-brown in colour and features…
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Common limpet (Patella vulgata)
The common limpet is a well-known seashore species . It has a conical shell, the outer surface of…
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Acorn barnacle (Semibalanus balanoides)
Barnacles are well-known intertidal organisms. They were not firmly accepted to be crustaceans until…
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European cowrie (Trivia monacha)
The European or spotted cowrie is a marine mollusc that has an egg-shaped glossy shell featuring…