Skip to 2:33 if you don't want any background and just want to stare into the abyss.

John Hoover is an author, underwater photographer, and professional diver, but that doesn't mean he's immune to the overwhelming power of the ocean. In this clip, you can watch him be bodily sucked into a churning vortex of powerful currents while diving off the coast of Maui, Hawaii. It will make you afraid to ever go into the water again, which is a good thing. There's much to fear in there.

Thankfully, Hoover was fine after this incident. He surfaced 50 yards away only minutes later. Sometimes, the sea is merciful. But it only does that to keep us guessing.

This video is actually a few years old, but it's gone viral all over again in the past week, because it's so fascinatingly terrifying. We felt compelled to share it, because everyone should think about death sometimes. Happy summer!

Sources: Daily Picks & Flicks