Human Interactions
Under most circumstances, the blacktip reef shark has a timid demeanor and is easily frightened away by swimmers. However, its inshore habitat preferences bring it into frequent contact with humans, and thus it is regarded as potentially dangerous. 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. Most attacks involve sharks biting the legs or feet of waders, apparently mistaking them for their natural prey, and do not result in serious injury. In the Marshall Islands, native islanders avoid blacktip reef shark attacks by swimming rather than wading through shallow water, and a way of discouraging these sharks is to submerge one's body. The blacktip reef shark has also been known to become aggressive in the presence of bait, and may pose a threat while attempting to steal the catches of spear fishers.
The blacktip reef shark is a regular catch of coastal fisheries, such as those operating off Thailand and India, but is not targeted or considered commercially important. The meat (sold fresh, frozen, dried and salted, or smoked for human consumption), liver oil, and fins are used. The International Union for Conservation of Nature has assessed the blacktip reef shark as Near Threatened. Though it remains widespread and common overall, substantial local declines due to overfishing have now been documented in many areas. This species has a low reproductive rate, limiting its capacity for recovering from depletion. Blacktip reef sharks are popular subjects of public aquarium exhibits, because of their "sharky" appearance and modest size, and are also attractions for ecotourism divers.
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