The predator is a dusky shark, one of the largest shark species to roam the U.S. Atlantic coast—and one of the most imperiled. The dusky shark (Carcharhinus obscurus) also known as the bay shark, black whaler, brown common gray shark, brown dusky shark, brown shark, common whaler, dusky ground shark, dusky whaler, river whaler, shovelnose, and slender whaler shark, is a species of requiem shark, in the family Carcharhinidae, occurring in tropical and warm-temperate continental seas worldwide. However, in 2016, the Pondicherry shark was rediscovered in the Sri Lankan Menik and Kumbukkam rivers. This shark's rarity originally led to fears that it may be possibly extinct. Fewer than 20 specimens have been deposited in museum collections, most of which were collected prior to 1900. kalanz/CC-BY-SA 2.0. The shark fin trade is difficult to quantify but recent studies have suggested as many as 750,000 dusky sharks could be caught in the trade each year. Though the fisheries news cycle has mostly been taken up by the 15-year anniversary of the Sea Around Us project (and some choice words between researchers), today also marked the official announcement of the 12-month finding on the petition to list dusky sharks on the U.S. How Many Sharks Are There in the World? Furthermore, the species is believed to be extinct in the northern Mediterranean Sea as well as in the North Sea, two areas that once hosted abundant angelshark populations. The dusky shark (Carcharhinus obscurus) is a species of requiem shark, in the family Carcharhinidae, occurring in tropical and warm-temperate continental seas worldwide.A generalist apex predator, the dusky shark can be found from the coast to the outer continental shelf and adjacent pelagic waters, and has been recorded from a depth of 400 m (1,300 ft). When you think of “shark,” the image that comes to mind probably looks a lot like a dusky shark – grey on top, white on bottom, more streamlined than the beefy great white, with a classic triangular dorsal fin and sweeping tail f By Staff Writer Last Updated Mar 25, 2020 8:25:04 AM ET. There are approximately 470 known species of shark in the world, but it's impossible to count the exact number of individual sharks on the planet. A generalist apex predator, the dusky shark can … Endangered Species Act. Today, … These sharks also frequently end up trapped in the fishing nets by accident (by-catch). Life Span Population of dusky sharks in the western parts of Atlantic Ocean and Gulf of Mexico is reduced to 20% of its original size due to commercial fishing (because of their fins, meat, skin and oil). Dusky sharks can be found on depth of 1.300 feet.

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