The common squid is a weird and wonderful predator found all around our coasts.

This dainty seaduck is a winter visitor to our coasts, particularly in northern and eastern Scotland.

Parsley fern lives up to its name - the pale green fronds form in clusters among rocks and look just like parsley. Look out for it in upland areas, particularly in Wales and Cumbria.

As its name suggests, the zebra spider has the familiar black-and-white stripes of a zebra, making it very distinctive. It can be found stalking its prey on rocks, trees and walls, particularly in…

This little fish is found in rockpools during the summer months and has a clever adaptation that stops it being swept away by strong waves - their pelvic fins are fused to form a sucker that it…

This huge gull can be seen around most of the UK's coasts in summer, with some venturing inland in winter.

Red-necked grebes occasionally attempt to nest in the UK, but they're more often seen as winter visitors to sheltered coasts.

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

If you spot a crawling shell next time you're at the seaside, take a closer look… it might be a hermit crab!