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.
An otter in the sea is usually not a Sea Otter!The Sea Otter (Enhydra lutris) is our smallest marine mammal, but is one of the largest of the world's 13 otter species-males weigh up to 45 kilograms and reach 148 centimetres in length. Females are slightly smaller.