Corals are fascinating marine animals that live in colonies, forming beautiful structures known as coral reefs. These reefs provide essential habitats for many ocean species, including fish, sea turtles, and sea urchins. Corals are made up of tiny, soft-bodied organisms called polyps, which have a hard outer skeleton made of calcium carbonate. This skeleton helps protect the polyps and supports the reef's growth. Corals thrive in warm, shallow waters and rely on a symbiotic relationship with zooxanthellae, tiny algae that live within their tissues. These algae provide corals with food through photosynthesis, while corals offer them a safe home. Unfortunately, coral reefs are threatened by climate change, pollution, and overfishing, making their conservation crucial for marine biodiversity.