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

These little sea snails are found amongst the seaweed on rocky shores around much of the UK. They come in lots of different colours, from bright yellow to chequered brown!

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.

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