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The Gulf of Mannar Marine National Park is a protected area of India consisting of 21 small islands and adjacent coral reefs in the Gulf of Mannar in the Indian Ocean.It lies 1 to 10 km away from the east coast of Tamil Nadu, India for 160 km between Thoothukudi (Tuticorin) and Dhanushkodi.
Coral reefs deliver ecosystem services for tourism, fisheries and shoreline protection. The annual global economic value of coral reefs has been estimated at anywhere from US$30–375 billion (1997 and 2003 estimates) [14] [15] to US$2.7 trillion (a 2020 estimate) [16] to US$9.9 trillion (a 2014 estimate). [17]
The park is home to more than 40 species of sponges, 40 species of hard coral and 10 species of soft coral. [2] A sea slug on the sea floor rock. As the sea recedes, the sea creatures are exposed to the harsh sunlight before they retreat to deeper waters or take cover under rocks. The western reef heron (dark morphed) on the prowl.
Canton Island typifies the isolated coral atolls dotting the Pacific Ocean. The Structure and Distribution of Coral Reefs, Being the first part of the geology of the voyage of the Beagle, under the command of Capt. Fitzroy, R.N. during the years 1832 to 1836, was published in 1842 as Charles Darwin's first monograph, and set out his theory of the formation of coral reefs and atolls.
Coral reefs cover less than one percent of the ocean floor, but have out-sized benefits for marine ecosystems and economies. A quarter of marine life will depend on reefs for shelter, finding food ...
In May 2019, The National Centre for Coastal Research, an institute under the Ministry of Earth Sciences of India, which has a field research station in the Gulf of Mannar region, found an alarming pattern of bleaching in the reefs in Mandapam, Kilakarai and Palk Bay. Researchers observed a pattern of bleaching in corals when the temperatures ...
The vicious circle hypothesis for the lack of recovery of Caribbean coral reefs.The major component of the hypothesis is a feedback loop between sponges, which consume dissolved organic carbon and release plant nutrients, and seaweeds, which consume nutrients and release dissolved organic carbon.
Coral reefs are one of the most well-known marine ecosystems in the world, with the largest being the Great Barrier Reef. These reefs are composed of large coral colonies of a variety of species living together. The corals from multiple symbiotic relationships with the organisms around them. [21] Coral reefs are being heavily affected by global ...