Barking marine mammals are a type of mammal that live in the ocean and make a barking sound. Seals are one of the most common types of barking marine mammals, and they are easily recognizable by their large eyes, whiskers, and flippers. They are found in both the Arctic and Antarctic regions, and they feed on fish, squid, and other small animals. Seals are also known for their ability to dive deep underwater and stay submerged for long periods of time.