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A dolphin is an aquatic mammal within the infraorder Cetacea. Dolphin species belong to the families Delphinidae (the oceanic dolphins), Platanistidae (the Indian river dolphins ), Iniidae (the New World river dolphins), Pontoporiidae (the brackish dolphins), and possibly extinct Lipotidae (baiji or Chinese river dolphin).
- Bottlenose Dolphin
They are common, cosmopolitan members of the family...
- Dolphin (Disambiguation)
Dolphin is a common name of aquatic mammals within the...
- Common Dolphin
Common dolphin are medium-sized dolphins; adults range...
- Delphinidae
Oceanic dolphins range in size from the 1.7-metre-long (5 ft...
- Pontoporiidae
Main page; Contents; Current events; Random article; About...
- Evolution of Cetaceans
Species of the infraorder Cetacea A phylogenetic tree...
- River Dolphin
River dolphins are a polyphyletic group of fully aquatic...
- Maui's Dolphin
Māui dolphin, Maui's dolphin, or Popoto (Cephalorhynchus...
- Aquatic Mammal
An Amazon river dolphin (Inia geoffrensis), a member of the...
- Pygmy Killer Whale
The pygmy killer whale (Feresa attenuata) is a poorly known...
- Bottlenose Dolphin
Dolphins are part of the toothed whales. Generally, they are among the smaller whales. Most live in salt water oceans, but some live in rivers – there are oceanic dolphins and river dolphins. Dolphins are from 1.5 metres (4.9 ft) to 4 metres (13 ft) long, but the largest dolphin, the killer whale (or orca), can be up to 8 metres (26 ft) long.
Dolphins are largely marine cetaceans (order Cetacea) with many teeth that belong to the "toothed whales" suborder Odontoceti, along with whales and porpoises, and they usually have a beaklike snout. (The other cetacean suborder is Mysticeti, the baleen whales.) There are freshwater representatives among these aquatic mammals .
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