Coral is a marine organism that forms large structures known as coral reefs. These reefs are made up of tiny, soft-bodied animals called polyps, which live in colonies. Each polyp secretes a hard exoskeleton made of calcium carbonate, contributing to the growth of the reef over time. Coral reefs provide essential habitats for many marine species, making them vital to ocean ecosystems. Coral comes in various shapes and colors, and it thrives in warm, shallow waters. They are sensitive to environmental changes, such as rising sea temperatures and pollution, which can lead to coral bleaching. Protecting coral reefs is crucial for maintaining biodiversity and supporting fisheries.