Sound can travel thousands of miles and link animals across ocean vastnesses and in darkness, and many species are impeccably adapted to detect and communicate with sound. Photograph: Padraig Whooley/ CWW

A man-made cacophony reverberates across our ocean floors – the roar of ships’ propellers and engines, seismic tests, piles driven deep, dynamite fish(...)

The Great Barrier Reef off the coast of the Whitsunday Islands, among the locations being damaged by climate change. Photograph: Sarah Lai/AFP/Getty Images

There is an element in all of us of wanting to be the first or last to see something. Here are five destinations we should be thinking of seeing. All (...)

 Divers on  the Great Barrier Reef, which Unesco’s World Heritage Committee called on the Australian government to protect. File photograph: Jeff Hunter/Photographer’s Choice/Getty Images

A heritage committee of the Unesco cultural agency stopped short on Friday of placing Australia’s Great Barrier Reef on an “in danger” list, but raise(...)

The Great Barrier Reef has the world’s largest collection of coral reefs, with 400 types of coral, 1,500 species of fish, 4,000 types of mollusc, and is a habitat for threatened species.

Australia said yesterday it had the know-how to protect the Great Barrier Reef after the UN’s cultural agency criticised a plan to dump sand nearby, b(...)