Underwater Rivers

Underwater rivers are quite jarring. The name, however, is misleading. The Cenote Angelita Cave you see above has one and displays the misunderstanding well. A halocline, or cloud of hydrogen sulfide formed by decomposed organic debris at the bottom of the cave, makes the saltwater separate from fresh groundwater. That groundwater comes from below and seeps into the saltwater. Making it appear to divers that they are swimming in an underwater river attached to an ocean source.

Volcano Eruption Underwater

If you know anything about the planet, you know we have volcanoes not just on land but also in the water. Of course, oceans have risen over millions of years. This means some volcanoes once high above land will not be partially or completely submerged. Yet they are still just as dangerous as other volcanoes. Being near one when it is erupting is possibly life-threatening. Moreover, these volcanoes give off enough energy to power cities as well as start-up tsunamis.

The Depths of the Ocean Holds Truly Bizarre Creatures

Some people with Thalassophobia have reported being weirded out by this little guy. It is known as a Mantis Shrimp, getting its name from its similarities to the Praying Mantis. While the species gets far larger than the insect as well as larger than many other shrimp species, it is still relatively small. Humans have come into contact with them many times and did not have issues, but some did. The infamous punch from this shrimp is painful, and attacks can leave humans with some bad injuries.

Octopus Attacks

Most will tell you that if you leave them alone, octopi will leave you alone. An octopus rarely ever goes on the attack, especially against humans. They can be territorial though, so getting too close might cause this. Other times, they might be a little angrier than humans expect. The man above experienced this the hard way. An octopus was not happy with him being there and decided to attack him, taking away his camera along the way. Must not be a fan of being put on video without permission!

How The U.S. Navy Drownproofs SEALs

The United States Armed Forces has some of the most well-trained, and toughest men and women on the planet. Yet it goes beyond just being able to handle a weapon or fight. Sometimes, you need to be prepared to avoid death. In the Navy, you’re put through a drown-proofing course. This is essential for Marines and SEALs who will likely be around the water a lot. They tie up your arms and legs and have you do specific things numerous times until you’re, well, drown-proof.

Where do we find this stuff? Here are our Sources:

Centers For Disease Control & Prevention (CDC)

National Wildlife Federation (NWF)

National Geographic

USA Today

Washington Post

Live Science

ABC

CNBC