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 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.