Marine mammals are a group of animals that rely on the ocean for their habitat and food. This group includes species such as whales, dolphins, seals, and manatees. They are warm-blooded, breathe air, and give live birth, which distinguishes them from fish. Marine mammals are adapted to life in the water, with features like streamlined bodies and flippers. These animals play important roles in marine ecosystems, often serving as predators or prey. Many marine mammals are social creatures, living in groups called pods or colonies. They communicate using a variety of sounds and have complex behaviors, making them fascinating subjects for study.