As these polyps grow and die they lay the limestone foundation for civilisations and superstructures so large that they can be seen from space. Coral reef cities ... at a special health spa.

So big, in fact, that you can see it from space. David Wachenfeld: It's important for people to remember that the Great Barrier Reef is much more than just one coral reef, which is what I think a ...

Reef sounds are beneficial to some marine animals, which use them to locate reefs – a source of food and shelter. For researchers, recent studies suggest that sound recordings could be an effective ...

Since 2007, RCM has worked closely with Johor Fisheries Department to carry out annual reef check surveys around the islands. While earlier surveys had shown im­provements in coral health ...

Coral reefs are very much the rainforests of the oceans. Not only are they diverse communities, but the coral skeletons - like trees - contain potentially long term records of climate. Aa Aa Aa ...

This technology will help conservationists gain a clearer picture of the health of coral reefs, in an era where reefs need all the help they can get.