Mammals:
* Seals: Both harbor seals and grey seals have flippers.
* Sea lions: These animals also have flippers, though they are more mobile on land than seals.
* Walruses: Walruses have large flippers that help them swim and maneuver in the water.
* Manatees: These gentle giants have paddle-like flippers.
* Dolphins: Dolphins have two flippers, which are actually modified forelimbs.
* Whales: Many whale species, including humpback whales and blue whales, have flippers.
Other Animals:
* Sea turtles: Sea turtles have four flippers, two on each side of their body, that help them swim and steer.
* Penguins: Penguins have two flippers, which are actually modified wings, that they use for swimming underwater.
* Seabirds: Some seabirds, like the common loon, have webbed feet that resemble flippers.
Important Note: While the term "flipper" is commonly used for aquatic animals, it is important to note that some land animals also have limbs that resemble flippers, such as the limbs of a mole or the forelimbs of a sloth. However, these are not typically considered flippers.