There are eight different species of fur seal found in the worlds oceans. Only one of these fur seal species is found in the northern hemisphere with the remaining seven species of fur seal found in the southern hemisphere.
Fur seals are much more closely related to sea lions than true seals, and like sea lions the fur seal has external ears (many species of true seal are in fact earless). The fur seal also has relatively long and muscular foreflippers, and fur seals are also able to walk on all fours when the fur seals reach land.