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.
Penguins are found in many areas in the southern hemisphere. Most people think of penguins as living in very cold climates like the icy continent of Antarctica, but they also live in more temperate areas like the Galapagos Islands, Australia, and South Africa.Penguins are very funny animals. They are birds that cannot fly, but love to swim!ost people think of penguins as living in very cold climates like the icy continent of Antarctica, but they also live in more temperate areas like the Galapagos Islands, Australia, and South Africa. Penguins are very funny animals.