Sea Otter (Enhydra lutris): Sea otters are marine mammals known for their ability to swim and dive in coastal waters. They also come ashore to rest, groom, and give birth.
Polar Bear (Ursus maritimus): Polar bears are excellent swimmers and often traverse between ice floes and open water in search of seals, their primary prey. They are adapted to both icy waters and Arctic land.
Galápagos Sea Lion (Zalophus wollebaeki): Found primarily in the Galápagos Islands, these sea lions spend much of their time in the water hunting fish and squid but come ashore to rest and breed.
Saltwater Crocodile (Crocodylus porosus): Saltwater crocodiles are formidable predators that inhabit coastal waters and river estuaries in Southeast Asia and Northern Australia. They can move between freshwater and saltwater habitats.
Green Sea Turtle (Chelonia mydas): Green sea turtles are marine reptiles that migrate long distances between feeding grounds and nesting beaches. They are agile swimmers but also bask on beaches to warm themselves.
Penguins: Several species of penguins, such as the Emperor Penguin (Aptenodytes forsteri) and the Galápagos Penguin (Spheniscus mendiculus), are proficient swimmers that hunt underwater but come ashore to breed and molt. –
Atlantic Puffin (Fratercula arctica): Puffins are seabirds that spend most of their lives at sea, diving for fish and other prey. They return to coastal cliffs and islands to breed and raise their chicks.
Walrus (Odobenus rosmarus): Walruses are large marine mammals found in Arctic waters. They are excellent swimmers and divers but haul out onto ice floes or land to rest, socialize, and give birth.