City Seal Morning Routine, Tallinn, Estonia

Eared seals, also called "walking seals" and "otariids", include the animals commonly known as sea lions and fur seals. These are vocal, social animals that are somewhat better adapted to terrestrial habitats with rear flippers that can turn forward so that they can move on all fours on land. Their foreflippers are larger than those of earless seals and are used as a primary source of maneuverability in the water. Eared seals have external ears, as their name suggests, and more dog-like snouts, further distinguishing them from true seals. While sea lions are generally larger than fur seals and lack the dense underfur of the latter, the long-standing division into subfamilies (Arctocephalinae and Otariinae for fur seals and sea lions respectively) is unjustified in light of genetic evidence suggesting that several fur seal species are more closely related to some sea lions than other fur seals. The iconic ball-balancing circus seal is generally some species of sea lion, most commonly a California Sea Lion.
Odobenidae
The walrus is an exclusively Arctic species—the sole surviving member of the once diverse and widespread Odobenidae family. They are easily recognized by their long tusks and great bulk of up to 2,000 kilograms (4,400 lb). While they share with otariids the ability to turn their rear flippers forward, their swimming is more reminiscent of that of true seals, relying more on sinuous whole body movements. They also lack external ears. Unlike eared seals and true seals, which feed primarily by hunting fish and squid in the water column, walrus generally prefer benthic invertebrates, in particular clams. The unique squirt and suck method of feeding on mollusks first differentiated the original walrus ancestor from other pinniped lineages. There remains debate as to whether the walrus diverged from the eared seals before or after the true seals.