stunt double for johnny knoxville Tyson Swackhamer ... stunt crowd Jesse Trefney ... stunt partier Nicholas Verdi ... stunt double: Osric Chau Jonathan Yurco ... stunt crowd (uncredited) Thom Allport ... stunt partier (uncredited) Callie Croughwell ... utility stunts (uncredited)
Despite living in the water, whales breathe air. And like humans, they are warm-blooded mammals who nurse their young. A thick layer of fat called blubber insulates them from cold ocean waters. Some whales are known as baleen whales including blue, right, bowhead, sei and gray whales. This refers to the fact that they have special bristle-like structures in their mouths (called baleen) that strains food from the water.
Skin: Whales have smooth skin, while fish have scales. Body heat: Whales are warm-blooded (endothermic), while fish are cold-blooded (ectothermic). Whales have blubber, a layer of fat, that helps to keep them warm, and they also generate heat by swimming and by digesting food.