Atrial fibrillation (AF or A-fib) is an abnormal heart rhythm characterized by rapid and irregular beating.
Emperor penguins owe their scientific name (Aptenodytes forsteri) to their discoverer, the first natural scientist to reach Antarctica, the German Johann Reinhold Forster. Forster came to Antarctica in 1770, on Captain James Cook's ship, and saved Cook's life during the voyage.
Eudyptula is a âmonotypicâ genus. It comprises only a single species, the Little Penguin. The Little Penguin is different in many ways from all other penguins. It is the smallest of all penguins and the only nocturnal species.Its more horizontal posture gives it a different silhouette compared to the upright stance of other species.In many respects, however, Eudyptula is an Antipodean version of Spheniscus, the genus of banded penguins.t is the smallest of all penguins and the only nocturnal species. Its more horizontal posture gives it a different silhouette compared to the upright stance of other species. In many respects, however, Eudyptula is an Antipodean version of Spheniscus, the genus of banded penguins.