Blobfish

Behold, the Blobfish!  

This odd-looking fish (also called a fathead...for obvious reasons) lives deep in the waters around Australia.  It has no swim bladder, and no muscles!  Instead, it has this gelatinous body that allows it to float just above the sea level, eating whatever floats in front of it.  

Also, when I feel really sick (like I do today), it is my patronus.

There's more interesting blobfish information here.