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  1. River dolphin
    River dolphinGroup of aquatic mammals
    CharacteristicsFactsHabitatDietLifespanPredatorsPopulationEvolution
  1. Britannica
    https://www.britannica.com/animal/rive…

    River dolphin | Types & Facts | Britannica

    WebMar 27, 2024 · River dolphin, any of six species of small, usually freshwater mammals that are related to whales. They inhabit rivers of …

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    • riv·er dol·phin
      noun
      1. a solitary dolphin with a long slender beak, a small dorsal fin, and very poor eyesight. It lives in rivers and coastal waters of South America, India, and China, using echolocation to find its prey.
      More about river dolphin
    • Wikiwand
      https://www.wikiwand.com/en/River_dolphin

      River dolphin - Wikiwand

    • World Wildlife Fund
      https://www.worldwildlife.org/.../indus-ri…

      Indus River Dolphin | Species | WWF - World Wildlife …

      Web155 - 245 pounds. Length. 8.2 ft. Indus river dolphins are believed to have originated in the ancient Tethys Sea. When the sea dried up approximately 50 million years ago, the dolphins were forced to adapt to its only …

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    • People also ask
      Where do river dolphins live?
      River dolphin, any of six species of small, usually freshwater mammals that are related to whales. They inhabit rivers of south-central Asia, China, and South America and the coastal waters of Brazil, Argentina, and Uruguay and differ from other dolphins in their long beaks and rounded foreheads.

      River dolphin | Types & Facts | Britannica

      britannica.com
      Are river dolphins paraphyletic?
      River dolphins are a polyphyletic group of fully aquatic mammals that reside exclusively in freshwater or brackish water. They are an informal grouping of dolphins, which itself is a paraphyletic group within the infraorder Cetacea. Extant river dolphins are placed in two superfamilies, Platanistoidea and Inioidea.

      River dolphin - Wikipedia

      en.wikipedia.org
      What is a true river dolphin?
      'True' river dolphins are descendants of ancient evolutionary lineages that evolved in freshwater environments. Some species of cetacean live in rivers and lakes, but are more closely related to oceanic dolphins or porpoises and entered fresh water more recently.

      River dolphin - Wikipedia

      en.wikipedia.org
      What is the smallest river dolphin?
      The smallest river dolphin species, the La Plata river dolphin ( Pontoporia blainvillei ), also lives in South America. Also known as the franciscana, it inhabits the coastal waters of Brazil, Uruguay, and Argentina. Gray above and pale below, this little dolphin grows only 1.2–1.7 metres (4–5.6 feet) long and weighs 20–60 kg (45–135 pounds).

      River dolphin | Types & Facts | Britannica

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    • Discover Wildlife
      https://www.discoverwildlife.com/anima…

      River dolphin guide: where they live, the threats they …

      WebRiver dolphin guide: where they live, the threats they face, and what is being done to save them - Discover Wildlife. Discover why river dolphins are important, how they differ from marine dolphins, and the differences …

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    • National Geographic
      https://www.nationalgeographic.com/animals/mammals/...

      Amazon River Dolphin (Boto) Facts - National Geographic