dolphin |
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navigate by keyword : and aquatic are cetacea distributed diverse dolphins excluding fully group grouping informal mammals marine order paraphyletic porpoises the they whales widely within zoologists |
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Dolphins are a widely distributed and diverse group of fully aquatic marine mammals. They are an informal grouping within the order Cetacea, excluding whales and porpoises, so to zoologists the grouping is paraphyletic. |
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