Water worlds: top 10 marine adventure holidays worldwide

Ahead of the BBC’s new David Attenborough series Planet Blue II, we pick 10 trips that explore the oceans, from diving the Pacific’s ‘underwater Serengeti’ to reef conservation in Belize and kayaking in Komodo

Cousteau country: scuba diving in Papua New Guinea

With a new film about Jacques Cousteau to be released, the Walindi Plantation Resort, the dive centre and institute he inspired, is still the first word in marine conservation

Southend-on-Sea: the arty way is Essex

Paul O’Grady obviously hasn’t visited Southend for a while … The resort where the East End still goes for old-fashioned seaside fun now has a thriving arts scene, too

Marshes, mud flats and migrating birds on Denmark’s Wadden Sea

A futuristic thatched visitor centre is the latest focal point in Denmark’s Unesco-listed coastal national park, perfect for twitchers, cyclists and oyster lovers

The best of the UK seaside

Nostalgia, beaches and ice-cream come together in perfect harmony as 12 authors and locals choose their favourite places on the UK coast, with places to stay