They are all of coral formation, and in the western Indian Ocean.

With all these corals gathered together building skeletons around themselves, large coral formations are made.

They came out on the underside of a huge coral formation.

The best part is the corner where the coral formations are at their densest.

The tropical fish and coral formations promised for our £10 never materialised.

Because of coral formation, the cable was very difficult to snare in order to bring it up to the surface and cut.

He was a British scientist, an authority on tropical fish and coral formations.

It is named because of its unusual coral formations so far south.

The area is also known for coral formations swarming with tropical fish.

The sea received its name because of its numerous coral formations.