CORAL REEF AQUARIUM COLLECTION 「24/7」 🔴 Relaxing Music for Sleep, Study, Yoga & Meditation
Why are coral reefs so important? | Natural History Museum
Rising Ocean Temperatures are "Cooking" Coral Reefs | National Geographic
What Animals Live in a Coral Reef? | California Academy of Sciences
A coral reef is an underwater ecosystem characterized by reef-building corals. Reefs are formed of colonies of coral polyps held together by calcium carbonate. Most coral reefs are built from stony corals, whose polyps cluster in groups.
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