Coral Reefs

Reef historian Iain McCalman, in Sydney, and reef scientist Stephen Palumbi, in California, are monitoring reef degradation from opposite sides of the planet. They compared notes.

A tenfold increase in protected coral species was announced Wednesday, with 20 new corals added to the threatened species list.

When looking for a place to settle down, young corals and fish use chemical cues to sniff out bad neighborhoods littered with seaweed.

American corals are facing new risks, even at great depths.

Journey across the province of Palawan, which pokes out to the West of the Philippine Islands like a long finger squashed between the South China Sea and Sulu Sea.

Scientists have unearthed evidence for the oldest animal-built reef in the world, which was built by an ancient filter feeder called Cloudina some 550 million years ago.

One of the world's great coral reef regions protected fish from the ravages of climate change for the past 3 million years.