‘There’s nothing like it in any other ocean,’ says marine ... Lapointe is talking about a floating seaweed known as sargassum in a region of the Atlantic called the Sargasso Sea.

The inviting white-sand beaches and aquamarine inshore waters of many a Caribbean isle are now foul-smelling lagoons laden with noxious, decaying seaweed. Sargassum is actually a naturally ...

A male white shark in the Atlantic Ocean has become the largest ever to be tagged by a research group. The 13.9ft (4.2m) beast which has been named Contender weighs an estimated 1,653 lbs (750kg).