9 bizzare underwater discoveries that will make you shiver to the marrow (See Photos)

8. Sinkholes
Besides being a PG version of the word “a@@hole”, sinkholes are pretty neat! Terrifying but fascinating at the same time. You’ve probably seen some of the land ones but did you ever think that they can also appear on the ocean floor? Now, how they are formed deserves a geology thesis or at least someone who can tell stalagmites and stalactites apart, so just know that at any given moment the ground beneath you can swallow you whole, because of water, chemicals, time, and bureaucracy. Yeah, that last one is the most disastrous.