Penguins are sea birds that live in large groups in Antarctica. They are born on land but spend much of their time in the ocean hunting for fish. Penguins come back to the same places they were born to form breeding colonies and protect their young from the cold. However, penguin populations are decreasing due to threats like pollution, warming oceans, and toxic substances that are damaging their habitat. Conservation efforts are needed to protect penguins and the Antarctic ecosystems they depend on for survival.