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

As its name suggests, Sea spurge is found at the coast. It is an attractive plant that displays cup-shaped, greeny-yellow flowers and fleshy, grey-green leaves.

Mackerel are a sign of summer's arrival, when they appear inshore in huge numbers all around the UK. As well as being a sustainable seafood choice, they are an important food source for many…

The porbeagle shark is a member of the shark family Lamnidae, making it one of the closest living relatives of the great white shark.

A small colourful sea slug that can be found grazing on sea mats on the rocky shore and beyond the low water mark.

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

Despite being a little shy, these amazing marine mammals can be spotted close to shore in shallow waters. If you do get close, keep an eye out for the loud ‘chuff’ noise they make as they come to…

The sanderling scampers about the waves looking for marine crustaceans, fish and even jellyfish to eat. It visits the UK in winter from its Arctic breeding grounds, but can also be seen as it…