Advice on Diving in Bulgaria

...g independent eco-system. It is comprised of a salt-water layer that starts at a depth of 200m, and reaches down to 2000m. This cold, dense layer is completely anoxic (oxygen free) creating an inhospitable terrain for living creatures. On the surface, the Black Sea is fed by numerous rivers creating an upper layer of water with a saline content of only 16% - distinctly non-salty when compared to the ocean. Marine life is varied at this depth, and found down to 50m. A top dive site to explore is the submerged ancient Roman port, outside of Varna. Another highlight for divers is the scuttled Ge...