Penetration diving
Videos
An overhead or penetration diving environment is where the diver enters a space from which there is no direct, purely vertical ascent to the safety of breathable atmosphere at the surface. Cave diving
A cave diver running a reel with guide line into the overhead environment
Divers at the wreck of the SS Carnatic
Plongée sous glace VJ
Ice diving
Videos
Ice diving is a type of penetration diving where the dive takes place under ice. Because diving under ice places the diver in an overhead environment typically with only a single entry/exit point, it
Penetration diving
…enters a space from which there is no direct, purely vertical ascent to the safety of breathable atmosphere at the surface. Cave diving, wreck diving, ice diving and diving inside or under other natural or artificial underwater structures or enclosures are examples. The restriction on direct ascent increases the…
Ice diving - view from the top
Under the ice - view from below
Monitoring an ice diver conducting studies below the ice.
Cutting a hole in the ice to check the water conditions