Europe's largest frog is not naturally found in the UK, but was introduced to Kent and has spread throughout the southeast.

Once a rare visitor to the UK, this striking gull is now found nesting here in large colonies.

This pretty, speckled moth is now a rare sight, found only in a few parts of southern England.

The blackbird of the mountains, ring ouzels can be found breeding on upland moors and rocky crags in summer.

This beautiful moth is often found resting on leaves, though it does also fly during the day.

This strange furry creature often found washed ashore after storms is actually a kind of worm!

Ever spotted a honeycomb-like mound on the beach and wondered what it was? It's a reef built entirely by worms!

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

This slim fish is usually found on gravelly parts of the seabed, close to shore, but can turn up in rockpools.

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