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.
Fiordland Penguin. The Fiordland Penguin lives in the temperate rainforest of the southwest coast of the South Island and Stewart Island, New Zealand, where it is endemic. Identification: Similar to Snares Penguin, with a thick yellow stripe running above the eye and ending in a dropping plume.