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.
This is one of the three species of penguins classified as brush tail. This species of penguin has a black band that is very narrow under the head. Emperor Penguin. The largest of all penguins in the world is the Emperor Penguin.They tend to get plenty of attention too due to their size.Erect-Crested Penguin. The name of the Erect-Crest Penguin stems from the fact that they have yellow plumes above the eyes that are erect.Fiordland Penguin. You may hear the Fiordland Penguin referred to as the Tawaki. This is a species of crested penguins with a remarkable appearance.mperor Penguin. The largest of all penguins in the world is the Emperor Penguin. They tend to get plenty of attention too due to their size. Erect-Crested Penguin. The name of the Erect-Crest Penguin stems from the fact that they have yellow plumes above the eyes that are erect.