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DOLPHIN’S EVOLUTION OVER TIME

Dolphins have ancestral connections to terrestrial mammals and it is believed that the ancestors of dolphins that we know today entered the water about 50 million years ago! Having been terrestrial animals originally, several changes had to take place as outlined below for survival in aquatic environment. Dolphins’ earliest ancestors were land-based hoofed creatures that became aquatic, losing their hind legs and gaining flippers over time.

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