Whales, dolphins, and porpoises: cetacea physical characteristics cetaceans (sih-tay-shunz) are whales, dolphins, and porpoises these mammals live, eat, reproduce . Cetaceans – whales, dolphins and porpoises – are placental marine mammalsall modern members of the infraorder are fully aquatic and live in the open ocean (except a few species of dolphin which inhabit rivers and estuaries). Cetaceans, members of the order cetacea, are aquatic placental mammals (eutherians)they include whales, dolphins and porpoises the blue whale is the largest cetacean and the largest living animal in the world. Porpoises are marine mammals and are part of the cetacean species which also includes dolphins and whales so far there are currently around 6 known species of porpoises in existence today.
Cetaceans: hoofed mammals turned masters of the oceans cetaceans (whales, dolphins, and porpoises) are marine mammals which descended from artiodactyls during the early eocene, their closest modern being hippos (hippopotamidae). Whales, dolphins, and porpoises belong to a group known as cetaceans at least one type of cetacean lives in every ocean whales are the world’s biggest animals and dolphins are thought to be the cleverest of all sea creatures. Cetaceans: hoofed mammals turned masters of the oceans dolphins, and porpoises) are marine mammals which descended from a group which lasted from .
Cetacea (/ s ɪ ˈ t eɪ ʃ ə /) are a widely distributed and diverse clade of aquatic mammals that today consists of the whales, dolphins, and porpoises cetaceans are carnivorous and finned most species live in the sea, some in rivers. Small cetaceans (dolphins, porpoises, and the smaller toothed whales) harpoon hunting of small cetaceans has occurred virtually all around the world, but mainly in coastal and shelf waters (figure 2). How are dolphins and porpoises different both dolphins and porpoises are mammals although they both live in the ocean, neither dolphins nor porpoises are fish . Ocean dolphins are members of the largest cetacean family, the dolphinidae this group can vary greatly in size, appearance, diet, social behavior, and habitat. Cetacean - paleontology and classification: cetaceans are distant descendants of a group of poorly defined mammals known as condylarths there is debate as to whether the first cetaceans (archaeocetes) descended from an extinct group of large carnivores called mesonychids or from a group of hoofed herbivores (artiodactyls).
Cetacean morbillivirus (cemv) is a virus that infects marine mammals in the order cetacea , which includes dolphins , porpoises and whales three genetically distinct strains have been identified: dolphin morbillivirus (dmv), pilot whale morbillivirus (pwmv) and porpoise morbillivirus (pmv). The cetaceans (whales, dolphins and porpoises) are descendants of land-living mammals there are some evidences that confirm this fact: their need to breathe air from the surface the bones of their fins that resemble the jointed hands of land mammals and the vertical movement of their spines, a common characteristic of a running mammal rather . With a perpetual smile on their faces, dolphins, as members of the carnivorous cetacean family that also includes whales and porpoises, use echolocation – a type of sonar – to see while they swim beneath the waves.
The characteristics of dolphins and porpoises, mammals from the group cetacean. Dolphins, like whales, are mammals that live permanently in the wateralong with whales and porpoises, they belong to the cetacean group there are 41 species of dolphin, ranging in size from less than 14 metres (less than 5 feet) long to the killer whale, or orca, about 9 metres (30 feet) in length. Cetacea (whales, dolphins and porpoises) (mammal-like reptiles they have also needed to develop morphological characteristics quite different from the surface .
Cetacean: cetacean, any member of an entirely aquatic group of mammals commonly known as whales, dolphins, and porpoises cetaceans are entirely carnivorous their ancestors moved their limbs in a vertical plane, and thus cetaceans use vertical strokes when they swim, instead of horizontal strokes like a crocodile or fish. Whales, orcas, dolphins and porpoises name for a large group of sea mammals that have very streamlined body shapes, paddle-shaped front limbs, and tails that are .
Linnaeus originally assigned the name cete to the order of mammals consisting of whales, dolphins, and porpoises the term is derived from the classical noun cetos , meaning a large sea creature linnaeus conceived cete to be the sole member of the group mutica, one of his three primary subdivisions of placental mammals. Whales, dolphins, and porpoises: cetaceans cetaceans are completely aquatic mammals: they feed, mate, calve, and suckle their young in the water. There are over 80 species of cetaceans, a group made up of whales, dolphins and porpoises cetaceans are air-breathing, warm-blooded mammals that bear live young and nurse them on milk they live their entire lives in the oceans and seas worldwide, inshore and pelagic.