Cold-water corals are marine organisms that thrive in deep, cold ocean waters, typically at depths of 200 meters or more. Unlike their tropical counterparts, these corals do not rely on sunlight for energy, as they lack the symbiotic algae that provide nourishment through photosynthesis. Instead, they feed on tiny particles and plankton drifting in the water. These corals play a crucial role in marine ecosystems by providing habitat and shelter for various marine species. They form complex structures known as coral reefs, which support biodiversity and contribute to the overall health of the ocean environment.