This worm builds its own home out of bits of shell and sand. It can be spotted on the shore all around the UK.

The last thing you’d expect this extraordinary creature to be is a fish!

Ever noticed lots of little white spirals on seaweed fronds on rocky shores? These are tiny tube worms!

Nudibranchs, also known as sea slugs, are much like their land-based relatives that you may spot in your garden. But, unlike your regular garden slug, the nudibranch can incorporate the stinging…

Sand eels are a hugely important part of our marine ecosystem. In fact, the fledgling success of our breeding seabirds entirely depends on them.

One of the UK’s rarest marine species, this giant of the rocky shore is a very special fish.

This seagrass species is a kind of flowering plant that lives beneath the sea, providing an important habitat for many rare and wonderful species.

This dazzling moss grows in dark places, catching any faint light to glow a golden-green.

This fluffy moth is one of the few species that fly in winter.