pinnis

Pinnis, also known as pinnipeds, are a group of marine mammals that include seals, sea lions, and walruses. They are characterized by their streamlined bodies, flippers, and the ability to walk on all fours on land. Pinnipeds are well-adapted to aquatic life, with a dense layer of blubber for insulation and buoyancy, and a streamlined shape that reduces drag in water. They are found in various habitats, from polar regions to tropical waters, and play important roles in their ecosystems as both predators and prey.

Seals are the most diverse group within pinnipeds, with over 30 species, including the harbor seal, gray seal, and elephant seal. Sea lions are found primarily in the Northern Hemisphere, with species such as the California sea lion and Steller sea lion. Walruses are the largest pinnipeds, with a distinctive tusklike task and a thick layer of blubber that can reach up to 10 centimeters. They are found in the Arctic and subarctic regions.

Pinnipeds are known for their social behavior, with many species living in colonies on land or in the water. They are also important to humans, with some species hunted for their meat, oil, and fur, and others protected due to their ecological significance. Conservation efforts are ongoing to protect pinniped populations from threats such as climate change, pollution, and human disturbance.