One of the most colourful fish in UK seas, the cuckoo wrasse looks like it belongs in the tropics. Don't be fooled though, it's very much a native species.

Considered to be an early sign of spring, the song of the cuckoo sounds the same as its name: ‘cuck-oo’. It can be heard in woodlands and grasslands. Cuckoos famously lay their eggs in the nests…

It’s easy to identify this distinctive skate from the black and yellow marbled eye spots on each wing.

The largest of the UK wrasse species, the ballan wrasse with its striking patterning is a delight for any rocky reef snorkeller or shallow water diver!

One of the most striking and beautiful reef species found in the UK!

It's easy to see where the blue shark got its name from. These sleek, elegant sharks have beautiful metallic blue backs which provide brilliant camouflage out in the open ocean.

Despite its name, the "common" skate is not so common anymore. In fact, they are Critically Endangered.

The porbeagle shark is a member of the shark family Lamnidae, making it one of the closest living relatives of the great white shark.