concept Art: No Legs, No Wings, Incredibly fast

conceptart.org/forum submission:

The Moxie is an amphibian who lives in the swamplands and feeds off small bugs. Roughly the size of a lemon, he is composed of very lightly structured organs and bones. His internal system breaks down H2O into Helium, and stores it in a sac, which expands his lower torso. Moxies float while filled with Helium, awaiting small bugs, and with speed undetectible to the human eye, they strick by rapidly releasing their Helium from their rear oraphus, igniting the helium, and propelling their bodies forward to attack their prey.