This gentle giant is the largest shark in UK seas, reaching up to 12m in length. There's no need to fear them though, they only eat plankton!

The moon jelly is the most common jellyfish in UK seas, often washing up on our beaches. No need to worry though - it doesn't sting humans.

This large sea slug is anything but dull!

The sea hare looks like a sea slug – but in fact has an internal shell. They can be up to 20cm long but are usually much shorter.

This colonial creature looks like an old-fashioned quill - that's where the name sea pen comes from.

Sometimes called 'Wild spinach', Sea beet can be cooked and eaten. It grows wild on shingle beaches, cliffs and bare ground near to the sea, as well as in saltmarshes.

A large colourful sea slug found on rocky shores around the UK.

Sea potatoes may have a funny name, but they are perfectly adapted for life in the sand. They are a type of sea urchin that live in a burrow in the sand, feeding on dead animals and plants using…

If you happen to be near rocky places such as sea cliffs, shingle coastlines or even gravel paths during the summer months you will most likely come across sea campion.

Sea lettuce is unmistakeable - most often a bright green and always translucent, it is found on all UK coasts.