Seals are marine mammals that are known for their playful nature and sleek bodies. They are found in oceans around the world and are often seen lounging on rocks or swimming gracefully in the water. Seals have a thick layer of blubber that keeps them warm in cold waters, and they use their flippers to propel themselves while swimming. There are several types of seals, including harbor seals and elephant seals, each with unique characteristics. Seals are also known for their vocalizations, which they use to communicate with one another. These fascinating animals play an important role in the marine ecosystem, helping to maintain the balance of ocean life.