The Pentarius Project – Deep Sub Expedition

By John Kinsella

Pentarius Sub

The deepest known part of the world’s oceans is the Challenger Deep in the Mariana Trench. It lies under 10,994 metres/36,070 feet of water. Four times as many people have walked on the moon as have seen the sea floor here first hand. It’s not an easy place to visit. …read more

Source:: PADI News