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13 Δεκ 2019 · Dolphins (Odontoceti) are a group of 44 species of toothed whales or cetaceans. There are dolphins in every ocean on Earth, and there are freshwater species of dolphins that inhabit rivers in South Asian and South American.
There are 36 dolphin species, found in every ocean. Most dolphins are marine and live in the ocean or brackish waters along coastlines.
Learn about the diverse habitats of dolphins, from freshwater rivers to open ocean. Find out what they eat, how they hunt, and how they interact with humans.
Dolphins can be found all over the world and in different environments. There are 36 species of marine dolphins - living in nearly all aquatic environments, including oceans, coastal, estuarine and freshwater - and in temperatures ranging from less than 0°C to more than 30°C.
Dolphins are aquatic mammals of the infraorder Cetacea that constitutes five families, including oceanic dolphins, the Indian river dolphins, brackish dolphins, the New World river dolphins, and the extinct Chinese river dolphins.
9 Μαρ 2024 · weight: The smallest dolphins can weigh just 50kg, while orcas can grow to a whopping 10 tonnes. Most species tend to weigh between about 50 and 200kg though; habitats: Freshwater, Oceans; population: While world populations of all dolphins are hard to estimate, scientists calculate there are about 6 million bottlenose dolphins worldwide
A dolphin is an aquatic mammal in the clade Odontoceti (toothed whale). Dolphins 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).
