There's a three month trial period quality meds delivery Del Raye hypothesized that a well-fed shark would drift down more slowly than a lean one. A great white’s fatty liver, which can make up more than a quarter of an adult’s body weight when fully stocked with buoyant fats, has the same effect as a life preserver, making it hard to dive quickly. (Unlike bony fish, great whites don’t have gas bladders, so they depend on this oily organ to keep from sinking.)