References and Further Information: 1  Morrissey, J.F. and J.L. Sumich. 2012. Introduction to the Biology of Marine Life (10th Edition). 2  University of California Museum of Paleontology. Bilateral (left/right) Symmetry.
A lot of things. For one, Whale sharks are fish and use gills to breathe. Blue whales are mammals. The blue whale is also bigger than the whale shark. The tail structure is also different if you watch the whale shark swim, it uses its tail in a side to side motion while the blue whale uses a up and down movement.
The longest blue whale ever measured was a female who was 33.65 (110 feet) meters long, and that was in modern times. How large the largest whales got before humans started to hunt them is anyone's guess. heard the largest known dinosaur to have lived was the Bruhathkayosaurus, so I was wondering, is this bigger than a blue whale, because I guess it could be longer, but how could it possibly weigh more than a blue whale because a blue whale is a marine animal and, I would assume, would weigh more because it...