Sharks are fish and whales are mammals. The way of breathing is different: sharks breathe with their gills and whales breathe with their lungs. Breeding mode: sharks reproduce by oviparous or viviparous, and whales reproduce by viviparous. The way forward is different: the shark swings its tail fin left and right, and the whale swings up and down. Whether there are pectoral fins and ventral fins: sharks have pectoral fins and ventral fins, but whales don't.

Sharks and whales are relatively large marine creatures, which belong to the upper species in the food chain. Generally speaking, the two are more powerful than sharks, because sharks are more fierce and whales are generally docile. However, there are also natural enemies of sharks in whales, such as killer whales. When encountering killer whales, sharks usually hide.

Whale is an important member of marine animals. It looks like a fish, commonly known as whale. There are many kinds of whales, including more than 80 in the world and more than 30 in China. Generally divided into two categories. One kind with a beard and no teeth in its mouth is called baleen whale, with *** 1 1 species; There are more than 70 species of toothed whales. Shark teeth are composed of dentin, bone dentin and enamel, and evolved from peltate scales. The shape of teeth is one of the classification criteria. There are many kinds of shark teeth, including comb teeth with different front and back teeth, three-peak teeth with three tips, multi-peak teeth with more than 5-7 tips, single-peak teeth with L large flat edges, stone teeth with a few teeth, a large number of granular teeth and wide and flat cutting teeth.