Seals are well designed to swim in water. Their bodies are very streamlined and their flippers propel them quickly through the water. Vertebrate Animals Invertebrate Animals Web Links Science Main Index Seals also spend considerable time lying around on rocky islands and beaches. But they are clumsy and move slowly on land using their flippers. The pups develop rapidly, with some able to swim within a few hours of birth.
Walruses differ from seals in that they are larger and have large tusks.
They can be over 10 feet long and over 3,000 pounds.