Corrals in Beach...
Corrals in Pasikuda Beach with Sea face....
Location :- Pasikuda beach.(Eastern Province, Sri Lanka)
Captured by :- Mohammad Ashfaque.
Date :- 2016.12.09
- ABOUT CORALS
Coral organisms, called
polyps, can live on their own, but are primarily associated with the
spectacularly diverse limestone communities, or reefs, they construct.
- Polyps, Colonies, and Reefs
Coral polyps are tiny,
soft-bodied organisms related to sea anemones and jellyfish. At their base is a
hard, protective limestone skeleton called a calicle, which forms the structure
of coral reefs. Reefs begin when a polyp attaches itself to a rock on the sea
floor, then divides, or buds, into thousands of clones. The polyp calicles
connect to one another, creating a colony that acts as a single organism. As
colonies grow over hundreds and thousands of years, they join with other
colonies and become reefs. Some of the coral reefs on the planet today began
growing over 50 million years ago.
- Color and Bleaching
Coral polyps are actually
translucent animals. Reefs get their wild hues from the billions of colorful
zooxanthellae (ZOH-oh-ZAN-thell-ee) algae they host. When stressed by such
things as temperature change or pollution, corals will evict their boarders,
causing coral bleaching that can kill the colony if the stress is not
mitigated.
- Threats to Survival
Coral reefs teem with life, covering less than one
percent of the ocean floor, but supporting about 25 percent of all marine
creatures. However, threats to their existence abound, and scientists estimate
that human factors—such as pollution, global warming, and sedimentation—are threatening large swaths of the world's reefs.
Leave your Comments...
Best...
ReplyDelete