Also known as 🐬, Dolphin, dolphins, dolphin calf
A dolphin is any one of the 40 extant species of aquatic mammal from the cetacean families Delphinidae (the oceanic dolphins), Platanistidae (the Indian river dolphins), Iniidae (the New World river dolphins), Pontoporiidae (the brackish dolphins), and the probably extinct Lipotidae (baiji or Chinese river dolphin). All these families belong to the parvorder Odontoceti, i.e., toothed whales, which also include the closely related families Monodontidae (beluga and narwhal) and Phocoenidae (porpoises), as well as the more distant families Physeteroidea (sperm whales) and Ziphiidae (beaked whales
Dolphins are aquatic mammals belonging to the toothed whale group, with about 40 living species found in oceans and rivers across five different families. They matter as significant members of marine ecosystems and are closely related to other cetaceans like beluga whales, narwhals, and porpoises.
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