Atrial fibrillation (AF or A-fib) is an abnormal heart rhythm characterized by rapid and irregular beating.
Emperor penguin - Aptenodytes forsteri. This is the largest species of penguins. Emperor penguins are only found on and around the Antarctic continent, on the thick pack ice and rarely on mainland. They have a pale yellow, open (breast and chin patch are one) patch on chin and breast. A long, thin and curved bill, typical for fish eaters. Very dark grey back and blue black head.
Chinstrap Penguin Distribution. The Chinstrap Penguin lives around the South Sandwich Islands, South Orkeys, Bouvet Island, Balleny, South Shetland, and Antarctica. The isolated islands and the icebergs found in the sub Antarctic areas including the Antarctic Peninsula is where they live. They tend to avoid areas of heavy ice packs. They also donât spend too much time around the continental coasts. While the Chinstrap Penguin does migrate a bit for mating, they tend to live in close proximity to these islands where mating occurs so they donât have far to go.