Tardigrades, also known as waterbears, are marine animals found in or near freshwater habitats, all over the world. They are one of the most adaptable animals, living anywhere from tropical rain forests, to arctic climates. Pick up some moss or mud, and you are likely to find these critters, which are about 1mm in size, and easily visible using a microscope.
Even with the small size of the water bear in mind, tardigrades still have legs, claws eyes skin and muscles! Realistically, they are usually opaque with the texture of, what one article described as, a gummy bear.
The most interesting thing about these tiny animals are their ability to undergo a processes called cryptobiosis, where the animal can suspend their metabolism for long periods of time. This state allows the animal to survive for long periods of time in areas where it would otherwise not be able to survive. They’ve even survived space travel in low-orbit, and are the subject of space research!