Power naps - Dolphins are unable to breathe under water, so how do they sleep without drowning? They take 15-20-minute naps!
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Pregnancy and motherhood - The gestation period of pregnancies varies between nine and 17 months, resulting in the birth of a single calf in most cases.
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Calves - Calves are nurtured for one to two years, and typically remain in the company of their mothers for an additional one to seven years.
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They're very sociable - Dolphins form intricate social connections. Researchers have found evidence showing that they form friendships with fellow dolphins.
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Their language hasn't been deciphered - Dolphin vocalizations have been the subject of scientific study for a while, but their language is still a mystery to us.
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Dolphins recognize their "own name" - Researchers suggest they possess the ability to recall fellow dolphins' whistles even after long periods of separation.
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They use echolocation for navigation - Dolphins possess their own sonar, enabling them to perceive objects through sound waves.
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They use echolocation for navigation - Dolphins use click sounds to detect their surroundings and navigate through the echo produced when these sounds bounce off objects.
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They don't use their teeth as we do - Dolphins have teeth but don't use them for chewing food like humans do.
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They don't use their teeth as we do - Dolphins use their teeth to capture their prey, which they swallow whole without chewing.
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They live in groups - This helps them to organize themselves for hunting, evading predators, and supporting ailing or wounded members.
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They live in groups - On occasion, these groups of dolphins join together, creating a "superpod" that can contain more than 1,000 dolphins!
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They are used by the U.S. Navy - The Navy Marine Mammal Program, located at San Diego's Space and Naval Warfare Systems Command, is responsible for training dolphins.
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Lifespan - The lifespan of different species varies, but wild dolphins tend to live longer than those in captivity.