All dolphins belong to a small group of animals called Cetacea. Scientists think the marine animals in this group lived on land before they began life in the ocean. Whales are Cetacea, too. In fact, dolphins are just a small type of whale with teeth.
They include Dolphins, whales and porpoises.
A whale is a mammal, the y breathe air, and they do not have gills.
reptile
Cetacea, phylum Arthropoda, phylum Cnidaria
Boris Fedorovich Sergeev has written: 'Paradoksy mozga' 'Zhivye lokatory okeana' -- subject(s): Behavior, Cetacea, Echolocation (Physiology), Mammals, Marine animals, Physiology 'The living sonars of the ocean' -- subject(s): Behavior, Cetacea, Echolocation (Physiology), Mammals, Marine animals, Physiology 'The world of the amphibians' -- subject(s): Amphibians
The larger animals that swim are called cetaceans.
whales
A group of cnidarians that provide food and shelter for many kinds of animals are the sea anemones. Many animals in the ocean use these as a sort of shelter
The Azores are an autonomous region of Portugal.
The Atlanic ocean and the Pacific Ocean have the most animals
The answer is ocean animals have fins, flippers, and gills.