What Is Echocardiography? Echocardiography (EK-o-kar-de-OG-rah-fee), or echo, is a painless test that uses sound waves to create moving pictures of your heart. The pictures show the size and shape of your heart. They also show how well your heart's chambers and valves are working.
Taxonomy/Description. The Giant Otter's scientific name is Pteronura brasiliensis, which means winged tail belonging to Brazil, although this otter species is not limited to Brazil. Winged refers to the fin-like shape of the giant otter's tail. The giant otter is a member of the weasel family, Mustelidae, in the Mammalian Order of Carnivora.
Sea otter. The sea otter (Enhydra lutris) is a marine mammal native to the coasts of the northern and eastern North Pacific Ocean. Adult sea otters typically weigh between 14 and 45 kg (31 and 99 lb), making them the heaviest members of the weasel family, but among the smallest marine mammals.