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Unformatted text preview: process of molting the shell splits and falls away. 3. Jawless fish, cartilaginous fishes, bony fishes, amphibians, reptiles, birds, and mammals are the seven classes of vertebrates. Amphibians have no permanent marine representatives, although all of them depend on the constant flow of water through their bodies to remove waste. Too much water could cause an amphibian to dehydrate and die and this is why they are not permanently marine. 4. Odontoceti whales are active predators who have teeth to catch prey. They are believed to be intelligent and search for their prey using echolocation. More is known about this type of whale. Mysticeti, or baleen whales, have no teeth, but feed through filters of baleen. We know comparatively little about mysticeti whales....
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- Spring '08