Aquatic Mammals

Aquatic mammals are mammals specially adapted to live in water environments, such as the ocean, rivers, and lakes. Unlike fish, they breathe air through lungs, not gills, and often have streamlined bodies to swim efficiently. Examples include whales, dolphins, porpoises, seals, sea lions, and otters. They rely on echolocation, thick blubber, and specialized limbs to navigate, hunt, and stay warm in aquatic habitats. Despite their aquatic lifestyle, they are warm-blooded, nurse their young with milk, and share many biological features with land mammals, having evolved to thrive in water over millions of years.