One of 2 seahorses found in UK seas, long snouted seahorses are recognisable by their longer snout and fleshy "mane".

One of 2 seahorses found in UK seas, short snouted seahorses are recognisable by their shorter snout - surprisingly enough!

The ocean sunfish is the second largest bony fish on the planet and visits UK seas during the summer months to feast on jellyfish.

The common whelk is the largest sea snail found in UK seas, though you're more likely to find the dry balls of empty whelk egg capsules washed up in strandlines.

Native oysters are a staple of our seas and our plates - but our love of their taste has lead to a sharp decline all around the UK.

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!