Famous blue holes, such as the Great Blue Hole in Belize and Dahab’s Blue Hole in Egypt, have long been sites of scientific interest and deep-sea exploration. However, none of these spectacular ...

People dive around corals in the Blue Hole in Dahab, Egypt, on Oct. 2, 2023. [Xinhua] The world's oceans are close to becoming too acidic to properly sustain marine life or help stabilise the ...