The best coastal walks in the UK

The rock pools that run from Pegwell Bay in the south to Herne Bay to the west house mussel beds, rare stalked jellyfish and the occasional octopus. Seaweed, from bladderwrack to sea lettuce, is so abundant that it sprouts from the crumbly cliffs and provides foraging grounds not just for humans but for migrating birds such as turnstones. Spindly brittle stars and white tube worms hide under swaying kelp. The tide brings in a curious ‘boring bivalve’, the piddock, which carves holes…