Some species of this fish is see-through. Yes! SEE-THROUGH! I guess it’s because they live in such crazy cold waters that their bodies can’t support visibility. Ninjas of the sea! What’s more amazing is that these little fishies not only survive in waters of -2 and 4 degrees Celsius, but they have antifreeze in their blood and body fluids! Super-weird, right? But oh-so-fascinating. I know all these weird facts about these creatures makes you really interested in the species. Now go out and learn!