Delphinidae
Quick Summary
The family Delphinidae, commonly known as oceanic dolphins, encompasses a diverse group of toothed whales. These marine mammals are found worldwide in various waters, from equatorial to subpolar regions, and some species also inhabit major river systems. Dolphins are characterized by their streamlined bodies, beak-like snouts, and needle-like teeth.
Dolphins are recognized for their intelligence, complex communication, and social behaviors. They use echolocation to navigate and hunt and possess a unique signature whistle for individual identification. Some species exhibit self-awareness, problem-solving skills, and tool use, such as employing sponges to protect their snouts while foraging. Their social structures are often flexible, with long-term bonds and cooperative care for young. While many dolphin species are widespread, some face threats and are classified as vulnerable or endangered.12
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dolphinPaleontology and classificationFamily Delphinidae (oceanic, or marine, dolphins) 37 species in 17 genera found worldwide, some of which occasionally venture into fresh water. Genus Lagenorhynchus (white-sided and white-beaked dolphins) 6 species found in subpolar to temperate waters of the Northern Hemisphere and polar to temperate waters of the…
Read MoreFamily Delphinidae (oceanic, or marine, dolphins) 37 species in 17 genera found worldwide, some of which occasionally venture into fresh water. Genus Lagenorhynchus (white-sided and white-beaked dolphins) 6 species found in subpolar to temperate waters of the Northern Hemisphere and polar to temperate waters of the…
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cetaceanAnnotated taxonomyFamily Delphinidae (dolphins and killer whales) 32 species in 12 genera. Characteristics variable. Some neck vertebrae fused; dorsal fin and well-defined beak present or absent. None with expanded tooth crowns. Length 1.7 to about 9 metres. Worldwide, marine and fresh water. About 35 fossil genera, Lower…
Read MoreFamily Delphinidae (dolphins and killer whales) 32 species in 12 genera. Characteristics variable. Some neck vertebrae fused; dorsal fin and well-defined beak present or absent. None with expanded tooth crowns. Length 1.7 to about 9 metres. Worldwide, marine and fresh water. About 35 fossil genera, Lower…
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