In the winter of 2018, a crew from Aquatica Submarines started their descent to the bottom of the Blue Hole. Their mission was to create a 3D map of the sinkhole's interior, but along the way ...

And so, when Richard Branson and a team of scientists took a submersible down to the bottom of Belize’s iconic Giant Blue Hole, they were braced for some truly extraordinary sights. The Blue ...