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Cetaceans (order Cetacea) are an entirely aquatic order of mammals comprising the whales, the dolphins, and the porpoises. The ancient Greeks recognized that cetaceans breathe air, give birth to live young, produce milk, and have hair—all features of mammals.
- Are cetaceans fish or mammals?
- Are cetaceans fish?
- How are cetaceans categorized?
- What are 3 examples of cetaceans?
Are cetaceans fish or mammals?
cetacean, (order Cetacea), any member of an entirely aquatic group of mammals commonly known as whales, dolphins, and porpoises.
Are cetaceans fish?
Cetaceans (sih-TAY-shuns) are a group of animals made up of about 90 different species, including porpoises, dolphins, and whales. Like fish, Cetaceans spend their whole lives in the water. But, like mammals, they need to come to the surface to breathe air.
How are cetaceans categorized?
There are about 86 species of whales, dolphins and porpoises in the order Cetaceans, divided into two sub orders: Toothed Whales or Odontoceti: have teeth and a single blowhole. ... Baleen Whales or Mysticeti: are larger than the toothed whales and are among the largest animals on earth.
What are 3 examples of cetaceans?
Ten living families of odontocetes are recognized including Phocoenidae (porpoises), Delphinidae (true dolphins) Monodontidae (belugas, narwhals), Kogiidae (Pygmy and dwarf sperm whales), Physteridae (sperm whale), Ziphidae (beaked whales), Platanistidae (Indian River Dolphin), Iniidae (Amazon River dolphin), ...
