Many people visiting in the beach in Cornwall will already be aware of the venomous fish with an "excruciating" sting that is hiding in the shallows - and this is what it looks like.

Weever fish are small fish with venomous spines that bury themselves half in the sand, and when you step on them, their poison creates an extremely painful sting.

As the sea warms, more and more of these fish are being found in the UK shallows, an expert has now warned.