A pair of divers explore the wreck of the Giannis D (originally Shoyo Maru) on the Abu Nuhas reef, Strait of Gubal, Red Sea, Egypt. By British photographer Alex Mustard. He's travelled the world snapping pictures of wrecked ships lying on the sea bed.
Exploring the Longest Underwater Cave in Russia. Ordinskaya or the Orda Cave is the longest underwater cave in Russia. Accoridng to the Orda Cave Awareness Project it is the first and only underwater gypsum excursion cave in the world.
essenceofnxture: “ Diving ‘The Pit’ in the Mexican jungle Photo and caption by Danny Kessler A freediver reaching back up to the surface in ‘The Pit’, which is an amazing cenote sinkhole deep inside jungle in the Yucatan Peninsula in Mexico.