Atrial fibrillation (AF or A-fib) is an abnormal heart rhythm characterized by rapid and irregular beating.
Emperor penguins owe their scientific name (Aptenodytes forsteri) to their discoverer, the first natural scientist to reach Antarctica, the German Johann Reinhold Forster. Forster came to Antarctica in 1770, on Captain James Cook's ship, and saved Cook's life during the voyage.
The King penguin (Aptenodytes patagonicus) is the second largest species of penguin, next to the Emperor penguin.Size: King penguins are about three feet tall and weigh about 40 pounds.Life Span: The average lifespan of the King Penguin is 15 to 20 years in the wild.olor: King Penguins are black-backed and white-bellied with a dark head, an orange oval along the side of the face and a neon yellow patch decorating the top of the breast at the base of the neck. Also, an orange strip extends along the lower half of the beak.