The deepest blue hole in the world lies just off the coast of Mexico and scientists have been left perplexed. This underwater marine sinkhole is over 420 metres deep and explorers are still unable to ...

Scientists haven't been able to reach the bottom.

Located about three hours by boat off Ambergris Caye, the Great Blue Hole is a ring of coral encircling a huge underwater sinkhole. It’s home to colorful fish, shrimp, groupers, black tip and reef ...

Beneath the calm surface of Chetumal Bay in southern Mexico, the seafloor suddenly falls away into a near-bottomless void. This chasm, known as Taam Ja (which means “deep water” in Mayan), has just ...

So-called “blue holes” are naturally formed cavities on the sea floor with vertical walls, mostly found in coastal regions ...