A river-swimmer’s paradise in the heart of England

It may be plain old open-water swimming rather than a wild adventure but the tranquil rivers near Oundle and Olney, in the south Midlands, have plenty of pulling power

Underwater Photographer of the Year 2015 winners – in pictures

Winner hopes his photograph of a short snouted seahorse – that beat thousands of entries from 40 countries – will raise awareness of the species’ dramatic decline

Majuli island, Assam: a disappearing world

Lying between two channels of the mighty Brahmaputra in north-east India, Majuli island seems a picturesque watery idyll. But mighty rivers don’t always make good neighbours