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.
Chinstrap penguins live in the Antarctic, but are also found in small groups south of New Zealand (near Australia) on the Balleny Islands. They not only eat whatâs found in the water, but what they find on shore.he Chinstrap penguins hold the distinction of being perhaps the boldest of all penguin species. The second largest group of penguin species, the Chinstraps are known for their aggressive pursuit of prey.