Walrus
Walruses have lots of things similar to true seals and eared seals. Like true seals, they just have a hole for an ear - not ear flaps. Like eared seals, they can rotate their back flippers forward to walk on land. Like both true seals and eared seals, they are very good swimmers and divers. However, walruses do have some features that neither true seals nor eared seals have.