This large round urchin is sometimes found in rockpools, recognisable by its pink spiky shell (known as a test).

This small, round sea urchin is (unsurprisingly!) green in colour and can be found on rocky shores around the UK.

Edible periwinkles are a common sight when rockpooling and can be found in huge numbers on the shore.

Also known as the brown crab, this large crab is found around all UK shores and is identifiable by the distinctive pie-crust edge to its brown shell.