Differences between dolphins and sharks

Dolphin, Marine Mammals, Water, Sea
Dolphins differ from sharks in many aspects though they both live in sea and oceans. Dolphins belong to mammals, while sharks belong to the fish family. The dorsal fin of dolphins is rounded at the top, while that of the sharks is straight. Dolphins swim up and down, while sharks swim in a back and forth motion.
Animal, Aquarium, Fish, Ocean, Sea, Sharks, Swimming

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