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Marine Mammals: This category encompasses warm-blooded, air-breathing mammals that are adapted to life in the marine environment. They include species such as whales, dolphins, porpoises, seals, sea lions, walruses, manatees, and dugongs. These animals possess unique physiological adaptations that enable them to thrive in the ocean, such as specialized limbs for swimming, thick layers of blubber for insulation, and the ability to hold their breath for extended periods. As a subgroup within Coastal Animals, Marine Mammals are specifically those species that inhabit coastal regions and rely on the ocean for their survival. These animals play important ecological roles in their habitats, such as serving as apex predators or contributing to nutrient cycling. In the broader context of Animals By Habitat, and more specifically within the Ocean category, Marine Mammals are a distinct group that highlights the incredible diversity of life found in aquatic environments.