What is the Difference Between Walrus and Sea Lion?

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Walruses and sea lions are both marine mammals belonging to the group of pinnipeds, which have flippered feet. However, they have distinct differences in their family classification, physical appearance, size, and behavior.

Family Classification:

  • Sea lions are members of the Otariidae family, while walruses are members of the Odobenus family.

Physical Appearance and Size:

  • Sea lions have small ear flaps, large front flippers, and can walk on all fours. They have elongated bodies and long flippers that they use for swimming.
  • Walruses have tusks, which are large, long teeth that protrude from their mouths. They have shorter, stubbier flippers that are better suited for moving across ice. Walruses are generally larger and bulkier than sea lions.

Behavior:

  • Sea lions are more social and sometimes congregate in groups of up to 1,500 individuals. They are vocal and express themselves through loud barks.
  • Walruses are unique with their large tusks and vacuum-like mouths that can suck up shellfish from the ocean floor.

In summary, walruses and sea lions differ in their family classifications, physical appearances, sizes, and behaviors. While both are marine mammals with flippers, they have distinct characteristics that set them apart.

Comparative Table: Walrus vs Sea Lion

Here is a table comparing the differences between walruses and sea lions:

Characteristic Sea Lions Walruses
Family Otariidae Odobenidae
Size Comparatively smaller Comparatively larger
Appearance Soft fur, long neck, powerful front flippers Tusks, whiskers, gray or brown skin that turns pink
Location & Habitat Found worldwide except the Atlantic Ocean Primarily found in the Arctic Circle
Lifespan 15-20 years 40-50 years
Tusks None Present
External Ears Yes No
Movement Swim fins Whole body
Young Ones Pups Calves

Sea lions are part of the Otariidae family, while walruses belong to the Odobenidae family, both of which are part of the larger group of pinnipeds, which also includes seals. Sea lions are generally smaller and more streamlined than walruses, with long flippers that they use to propel themselves through the water. Walruses, on the other hand, are larger and bulkier, with short, stubby flippers that are better suited for moving across ice. They also have long tusks that protrude from their mouths, which are used for various purposes such as defense, breaking through ice, and helping them climb onto land.

Both species are top predators in their respective environments, feeding on a variety of fish and other marine creatures. They are also highly social animals, with sea lions forming large colonies on beaches and rocky outcroppings, and walruses gathering in large groups on ice floes.