Penguin In A Russian Zoo. Stock Photo

Penguin in a Russian zoo. Pinguinului or penguins (lat. Spheniscidae) — a family of flightless seabirds, only in the squad pinguinoerrante (Sphenisciformes). The family of 18 modern types. All members of this family can swim well and dive. The shape of the streamlined body of penguins, which are ideal for the movement in the water. Muscles and bones allow the device under water to use their wings almost like screws. Unlike other flightless birds, penguins have a sternum with a distinct keel, which is attached to powerful muscles.