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  1. The largest dolphin, the orca, can grow to be over 30 feet long. The smallest, the Maui dolphin, is just five feet long. Dolphins feed chiefly on fish and squid, which they track using echolocation, a built-in sonar that bounces sound waves off prey and reveals information like its location, size, and shape.
    www.nationalgeographic.com/animals/mammals/facts/dolphins
    www.nationalgeographic.com/animals/mammals/facts/dolphins
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    The scientific order, called Cetacea, includes dolphins, whales and porpoises. The dolphin family Delphinidae has 36 species. Some members of the dolphin family have the word whale in their common name, including the largest dolphin, the killer whale. Dolphins vary in size and weight depending on species.
    Dolphin: common name of aquatic mammals within the infr-aorder Cetacea. The scientific order, called Cetacea, includes dolphins, whales and porpoises. The dolphin family Delphinidae has 36 species. Some members of the dolphin family have the word whale in their common name, including the largest dolphin, the killer whale.
    Dolphins can be found in all the oceans around the globe. The dolphin gestation is usually 10 to 12 months for most species. Females typically give birth to one newborn at a time, which can weigh anywhere from 10 to 400 pounds at birth, depending on the species. Dolphins are social animals and are often found in groups, called “pods.”
    Some members of the dolphin family have the word whale in their common name, including the largest dolphin, the killer whale. Dolphins vary in size and weight depending on species. The largest dolphin is the killer whale ( Oscines Orca ), which can be up to 23 feet long and weigh up to 4.5 tons.
  3. Dolphin Fact Sheet | Blog | Nature | PBS

  4. Here are our top 10 facts about dolphins | WWF

    WEBB1. Dolphins can be found all over the world and in different environments. There are 36 species of marine dolphins - living in nearly all aquatic environments, including oceans, coastal, estuarine and freshwater - …

  5. Dolphin Facts: Habitat, Behavior, Diet - ThoughtCo

  6. Dolphin facts and information - Whale & Dolphin …

    WEBBLearn about the diversity, behavior, and conservation of dolphins, the intelligent and sociable marine mammals. Find out how many species of dolphins there are, where they live, what they eat, and how they …

  7. Dolphin facts and information - Whale & Dolphin …

    WEBBThere are currently 42 species of dolphins and seven species of porpoises. Dolphins are marine mammals. They must surface to breathe air and give birth to live young. A dolphin pregnancy last between …

  8. Dolphin | Facts & Pictures | Britannica

    WEBBför 6 dagar sedan · dolphin, any of the toothed whales belonging to the mammal family Delphinidae (oceanic dolphins) as well as the families Platanistidae and Iniidae, the two that contain the river dolphins. Of …

  9. Dolphin: Characteristics, Diet, Facts & More [Fact Sheet]

  10. Dolphin Facts | Dolphin Project

    WEBBLearn about dolphins' intelligence, communication, adaptations, lifespan, and threats from captivity and exploitation. Find out how to join the pod and help protect dolphins in the wild.

  11. Dolphin facts and information - Whale and Dolphin …

    WEBBAll dolphins have conical-shaped teeth. A Risso's dolphin has 14 while a spinner dolphin can have 240. The orca (killer whale) is the largest dolphin. Hector's dolphin and Franciscana are two of the smallest. The …

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