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

This brightly coloured and easily recognizable fish is one of three gurnard species found in UK seas. Collectively, gurnards are known as sea robins.

Mae'r rhywogaeth yma o forwellt yn fath o blanhigyn blodeuol sy'n byw o dan y môr, gan ddarparu cynefin pwysig i lawer o rywogaethau prin a rhyfeddol.

Ydych chi wedi gweld y twmpathau tebyg i bryfed genwair yma erioed ar draethau? Arwyddion o lyngyr y traeth yw’r rhain! Nid yw’r llyngyr eu hunain i’w gweld byth bron, ac eithrio gan bysgotwyr sy’…

Brittle stars, sea urchins and other starfish will want to stay out of the way of this speedy carnivorous starfish!

Worms in the sea are anything but dull and this fan worm, resembling a Catherine wheel, is a perfect example of the intricate beauty these animals possess.

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.

This black and grey solitary bee takes to the wing in spring, when it can be seen buzzing around burrows in open ground.

This sea snail is abundant on rocky shores around the UK. It is an active predator, feasting on mussels and barnacles before retreating to crevices to rest.