"It is a restless evil, full of deadly poison"

Most of my 3 readers will not enjoy this.

I like animals. They're all really amazing in the way they interact with one another, what they can do and how they're built to do it well.

Today, I came across a creature so unique in the niche that it fills, and so bizarre, that I just had to share it. Honestly, it's so weird I've put it on my list of questions to ask God.

It's also really gross, so you'll have to see what I mean after the jump.

This is Cymothoa exigua displayed in a cut-away of the jaws of a Spotted Rose Snapper. It is not being eaten. On the contrary, cymothoa exigua is the one doing the eating.

It is a parasite about 3-4 cm long when fully grown. They live in the ocean waters off the coast of California. They infiltrate the buccal cavity of Spotted Rose Snappers by way of the gills, or mouth, and latch onto the base of the fish's tongue. Their first three sets of claws are used to puncture and extract blood from the tongue, nourishing the parasite. After some time, the tongue atrophies due to the lack of blood and falls away, leaving behind a stub. Cymothoa exigua then latches onto the tongue-stub and replaces the fish's tongue, both in location and function. It continues its existence feeding on blood, or the mucous lining from the mouth. The common name for cymothoa exigua is the tongue louse.

The more pragmatic among us can see how this is a pretty sweet deal for the tongue louse. The human equivalent is like living the rest of your life in a pink minivan, with food in front of your face all day, and a constant flow of water washing away whatever waste you produce. You're sheltered from the elements, hidden from natural predators (except for the ones that eat pink minivans) and you get to see the world every other second. Chances are, your friends have found other pink minivans to shack up in and you guys can travel together.