2. Vocab: Fin: n. a flattened appendage on the body of a fish or other aquatic animal, used for propelling, steering, and balancing. Flipper: n. a broad, flat limb without fingers, used for swimming by sea animals such as seals and turtles. Stroke: n. 1. an act of hitting 2. one of a series of repeated movements. Layer: n. a sheet or thickness of material, typically one of several, covering a surface or body. Fatty: adj. containing large amount of fat. Blubber: n. the fat of sea mammals, especially whales and seals. Tusk: n. a long, pointed tooth, especially one which protrudes from the closed mouth, as in the elephant, walrus, or wild boar. Bulk: n. the mass or magnitude of something large.
3. Sea Lions Sea lions are distributed along north pacific coasts and on southern coasts of Africa, Australia and south America with 14 species. They can reach about 230 cm long and weight about 1000 Kg. They difference from seals because they can bring their flippers to help them to move, also the have small ear flips and swim by moving their front flippers
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5. Seals Most of the 18 species of seals live on waters to the far south and north of the world with the exception of the Baikal seal that lives in the fresh waters of Baikal Lake. They can reach about 5m high and weight up to 2.400 Kg. They only have an ear opening but they can swim by using their hind limbs in side to side strokes.
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7. Walrus Their habitat are the Arctic Ocean and the Sub-Arctic oceans of the Northern hemisphere. They are around 3m long, can weight up to 1700 Kg and have a 4cm skin that protect them to the cold waters, this layer of fatty blubber is the same as the Seals and Sea Lions have. The walrus is easily recognized by its prominent tusks (that can reach 55cm long), whiskers and great bulk.
