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.

Ever wondered what that little black dot whirling in circles on the top of the water of a pond is? Those are whirligig beetles! Often seen shooting across the water surface on the hunt for its…

This dashing diving duck is a winter visitor to the UK's seas, coastal lakes and occasionally inland water bodies.

These colourful little fish are a delight for snorkellers or shallow water divers to photograph, rarely being scared off by their presence!

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

The largest of the UK wrasse species, the ballan wrasse with its striking patterning is a delight for any rocky reef snorkeller or shallow water diver!

A scarce but distinctive brown seaweed with curved, funnel-shaped fronds. It is a warmer water species at the northern edge of its range on the south coast of England.

Look out for the Daubenton's bat foraging over wetlands across the UK at twilight. Its flight is fast and agile as it skims the water's surface for insect-prey.