love the Nature, while the Nature Loves you!
love the Nature, while the Nature Loves you!
Coral reefs are large underwater structures composed of the skeletons of colonial marine invertebrates called coral. The coral species that build reefs are known as hermatypic, or "hard," corals because they extract calcium carbonate from seawater to create a hard, durable exoskeleton that protects their soft, sac-like bodies. Other species of corals that are not involved in reef building are known as “soft” corals. These types of corals are flexible organisms often resembling plants and trees and include species such as sea fans and sea whips.
Never before, the corals and the coral reef are threatened direct from people behaviour and global environmental changes taking plac
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