Sea mammals are aquatic animals that live in the ocean and other saltwater habitats. The most common sea mammals include whales, dolphins, orcas, seals, otters, fur seals, and manatees. Whales are large marine mammals that can be found in all oceans of the world and are known for their long migrations. Dolphins are highly intelligent aquatic mammals that are found in warm and temperate seas around the world. Orcas, also known as killer whales, are the largest member of the DOLPHIN family and are found in all oceans. Seals are semi-aquatic mammals that inhabit coastal areas and are known for their ability to swim and dive underwater. Otters are small, semi-aquatic mammals that inhabit rivers, lakes, and coasts around the world. Fur seals are found in the Southern Hemisphere and are known for their thick fur coats. Manatees are large aquatic mammals that inhabit shallow, slow-moving rivers, estuaries, and coastal areas.