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.
The southernmost species (the emperor and the Adelie penguins) live in Antarctica. The northernmost species (the Galapagos penguin) lives in the Galapagos Islands. The other species live along the Antarctic Peninsula, the coastal areas of South America, Australia, New Zealand and South Africa.he southernmost species (the emperor and the Adelie penguins) live in Antarctica. The northernmost species (the Galapagos penguin) lives in the Galapagos Islands. The other species live along the Antarctic Peninsula, the coastal areas of South America, Australia, New Zealand and South Africa.