23 Fantastic Images Of The Incredibly Weird Things In The Ocean

Humans have explored almost every inch of land on the earth - but the ocean is another story.

Perhaps the true last frontier left on the planet, the ocean is home to hundreds of thousands of species that we're aware of and scientists estimate that there are hundreds of thousands more yet to be discovered in the strange environments that only exist underwater.

Thousands of types of unknown creatures lurk in the ocean's vast trenches, circle its tall mountains, and even haunt the sides of its underwater volcanos.

In short, it's an amazing place. Here's a list of some of the most mind-boggling things we've already found in the depths of the sea.