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.
Meet those well-loved, well-dressed flightless birds in THE WORLD OF PENGUINS. We all have an image of penguins gliding on ice at the South Pole â images that come from childhood. But contrary to popular belief penguins live beyond Antarctica, and can be found in New Zealand, southern Africa, and South America. While some species have adapted to life in regions that reach 100 degrees below zero others are comfortable in temperatures 100 degrees above.