Cool, crystal-clear waters flow over gravelly beds, streaming through white-flowered water-crowfoot and watercress in serene lowland landscapes.

Hedgerows are one of our most easily encountered wildlife habitats, found lining roads, railways and footpaths, bordering fields and gardens and on the coast.

These grasslands, occupying much of the UK's heavily-grazed upland landscape, are of greater cultural than wildlife interest, but remain a habitat to some scarce and declining species.

Beautiful displays of flowers spread under the gentle shade of unfurling ash leaves in spring, while in winter the abundant ferns and mosses mean these small, rocky woods retain a watery greenness…

From otters to freshwater shrimps, all animals are dependant on an abundant and reliable supply of clean water. Rivers sustain the natural environment, wildlife and people in equal measure.