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Cetacea is an infraorder of aquatic mammals belonging to the order Artiodactyla that includes whales, dolphins, and porpoises. Key characteristics are their fully aquatic lifestyle, streamlined body shape, often large size and exclusively carnivorous diet. They propel themselves through the water with … Meer weergeven
The two parvorders, baleen whales (Mysticeti) and toothed whales (Odontoceti), are thought to have diverged around thirty … Meer weergeven
Range and habitat
Cetaceans are found in many aquatic habitats. While many marine species, such as the blue whale, the humpback whale and the Meer weergevenReproduction and brooding
Most cetaceans sexually mature at seven to 10 years. An exception to this is the La Plata dolphin, which is sexually mature at two years, … Meer weergevenCetacean bodies are generally similar to those of fish, which can be attributed to their lifestyle and the habitat conditions. Their body … Meer weergeven
Circulation
Cetaceans have powerful hearts. Blood oxygen is distributed effectively throughout the body. … Meer weergevenSleep
Conscious breathing cetaceans sleep but cannot afford to be unconscious for long, because … Meer weergevenBrucellosis affects almost all mammals. It is distributed worldwide, while fishing and pollution have caused porpoise population density … Meer weergeven
Wikipedia-tekst onder CC-BY-SA-licensie WEB11 apr. 2024 · Cetaceans are aquatic mammals that include whales, dolphins, and porpoises. Learn about their body form, function, respiration, circulation, and thermoregulation from Britannica's experts.
WEBRead about Cetacea (dolphins, porpoises, and whales) on the Animal Diversity Web.
Cetaceans Facts, Complete Guide To Whales, Dolphins & Porpoises
WEB5 mrt. 2020 · Cetaceans are mammals that live in the ocean and have evolved from even-toed ungulates. They are divided into two sub-orders: baleen whales and toothed whales, which feed differently and have …
General features of cetaceans | Britannica
WEBcetacean , Any of the exclusively aquatic placental mammals constituting the order Cetacea. They are found in oceans worldwide and in some freshwater environments. Modern cetaceans are grouped in two …
Cetacea - IWC
Walvisachtigen - Animalia
WEBLearn about the Cetacea, the order of mammals that includes whales and dolphins. Explore their distinctive features, fossil history, and living species with photos and descriptions.
WEBCetaceans are distributed in all the world’s oceans from the far polar reaches to the Equator. They concentrate in areas of increased biological productivity, such as upwellings where there is an abundant supply of …
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