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Dolphins are highly intelligent and social marine mammals belonging to the family Delphinidae, which includes over 40 species. They inhabit various parts of the world's oceans and seas, ranging from temperate to tropical waters. Dolphins have streamlined bodies with a prominent dorsal fin, flippers, and a powerful tail fluke that propels them through the water at high speeds. They are known for their acrobatic displays, playful behavior, and complex communication skills. Dolphins feed on fish and squid, using echolocation to locate prey in dark or murky waters. Some species of dolphins form close-knit pods that work together to herd fish and hunt cooperatively. Unfortunately, many dolphin populations are threatened by human activities such as pollution, habitat destruction, and hunting. Dolphins are popular animals in zoos and aquariums, where they can be seen performing tricks and interacting with trainers. However, conservationists argue that keeping dolphins in captivity is not only unethical but also harmful to their physical and mental health. Overall, dolphins are fascinating creatures that have captured the imagination of people for centuries, inspiring countless myths, legends, and works of art.