Arrowhead is an aquatic plant of shallow water and slow-moving waterways. In bloom over summer, it displays small, white flowers, but it is the arrow-shaped leaves that are most distinctive.

The chocolate-brown, plump dipper can often be seen bobbing up and down on a stone in a fast-flowing river. It feeds on underwater insects by walking straight into, and under, the water.

The UK's smallest whale, the minke whale, is notoriously inquisitive around boats and is even known to breach clear of the water. Beware though - their fragrant breath has given them the…

A common dragonfly of canals, marshes, reedbeds and lakes, the Brown hawker can be seen patrolling the water or 'hawking' through woodland rides. It is easily distinguished by its…

The common pond skater can be seen 'skating' over the surface of ponds, lakes, ditches and slow-moving rivers. It is predatory, feeding on small insects by detecting vibrations in the…

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.

Planaria are flatworms in the phylum Platyhelminthes with amazing regeneration abilities giving them the title 'immortal under the edge of a knife'. There are many different species that…

A common dragonfly of ponds, lakes and canals near woodland, the Southern Hawker can be seen patrolling the water or 'hawking' through woodland rides. A fast-flying species, it will…