Sea lions are any of seven species in seven genera of modern pinnipeds including one extinct species (the Japanese sea lion). Sea lions are characterized by the presence of external ear pinnae (ear-flaps), long front flippers, the ability to walk on all four flippers on land, and the lack of dense underfur. Their range extends from the subarctic to tropical waters of the global ocean in both the northern and southern hemispheres with the notable exception of the Atlantic Ocean.
