Our smallest breeding seabird, the storm petrel is barely larger than a house martin! They mostly nest among rocks or in burrows on small offshore islands.

This stunning hermit crab has only returned to our southern shores in recent years. Let us hope it stays for good this time!

The common sandpiper breeds along rivers, and by lakes, reservoirs and lochs in upland Scotland, Northern England and Wales. It can be spotted as a passage migrant at many inland wetlands across…

The river lamprey is a primitive, jawless fish, with a round, sucker-mouth which it uses to attach to other fish to feed from them. Adults live in the sea and return to freshwater to spawn.

Look for the wood warbler singing from the canopy of oak woodlands in the north and west of the UK. Green above, it has a distinctive, bright yellow throat and eyestripe.