Blink and you may miss the fantastic kingfisher! It's often seen as a flash of blue flying low over a river.

The Atlantic salmon spends most of its life at sea, but makes an epic journey back to the river or stream in which it hatched to spawn. Look out for it in freshwater rivers in the north and west…

A funny little fellow in his glossy black dinner jacket and crisp white bib, the puffin is instantly recognisable thanks to its brightly coloured, parrot-like bill. Puffins use their colourful…

Freshwater pearl mussels spend their adult lives anchored to the river bed, filtering water through their gills and improving the quality of the water for other species.

Considered Britain's most threatened butterfly, the high brown fritillary can be only be found in a few areas of England and Wales.

Famously predatory, the long, slender pike will lurk among the vegetation of a river or lake, bursting out with ferocious speed to catch its prey. Look out for it across the UK.

This purply-brown seaweed is a common feature on our rocky shores and on our dinner plates.