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The Sentinelese, also known as the Sentineli and the North Sentinel Islanders, are an indigenous people who inhabit North Sentinel Island in the Bay of Bengal in the northeastern Indian Ocean. Designated a particularly vulnerable tribal group and a Scheduled Tribe, they belong to the broader class of Andamanese peoples.
Human activities affect marine life and marine habitats through overfishing, habitat loss, the introduction of invasive species, ocean pollution, ocean acidification and ocean warming. These impact marine ecosystems and food webs and may result in consequences as yet unrecognised for the biodiversity and continuation of marine life forms.
The Indian Ocean is the third-largest of the world's five oceanic divisions, covering 70,560,000 km 2 (27,240,000 sq mi) or approximately 20% of the water area of Earth's surface. [4] It is bounded by Asia to the north, Africa to the west and Australia to the east.
Within hours, the tsunami had claimed nearly 230,000 human lives and displaced millions of people in 12 countries. Thursday marks the 20 th anniversary of the 2004 Indian Ocean tsunami, one of the ...
The 2004 Indian Ocean earthquake tilted the tectonic plate under the island, lifting it by one to two metres (3 to 7 ft). Large tracts of the surrounding coral reefs were exposed and became permanently dry land or shallow lagoons, extending all the island's boundaries – by as much as one kilometre (3,300 ft) on the west and south sides ...
However, its inshore habitat preferences bring it into frequent contact with humans, and thus it is regarded as potentially dangerous. [3] As of early 2009, 11 unprovoked attacks and 21 attacks total (none fatal) were listed on the International Shark Attack File that are attributable to the blacktip reef shark. [ 38 ]
Since 1938, West Indian Ocean coelacanth have been found in the Comoros, Kenya, Tanzania, Mozambique, Madagascar, in iSimangaliso Wetland Park, and off the South Coast of Kwazulu-Natal in South Africa. [18] [19] The Comoro Islands specimen was discovered in December 1952. [20] Between 1938 and 1975, 84 specimens were caught and recorded. [21]
The tiger shark is considered to be one of the most dangerous sharks to humans. [1] Although it is found in the Red Sea it is not usually seen near reefs during the daytime. The Grey reef shark is territorial and may be aggressive, and has been involved in non-fatal attacks on divers.