Facts about Dusky Shark

1. 08

   Dusky shark teeth exhibit a distinctive serrated edge that allows them to saw through tough prey skin and bone with exceptional efficiency in deep ocean environments.

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2. 07

   In the northwestern Atlantic, dusky shark populations have remained depleted decades after fishing restrictions began in the 1990s due to their slow reproductive rate and late sexual maturity at 20 years old.

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3. 06

   Ranging across Atlantic and Pacific waters, dusky sharks migrate over 2,000 miles between coastal and deep-sea habitats following seasonal temperature changes and prey availability.

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4. 05

   Dusky sharks possess a specialized organ called the olfactory rosette with approximately 30 lamellae, enabling them to detect a single drop of blood in an Olympic-sized swimming pool.

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5. 04

   Viviparous reproduction with intrauterine cannibalism allows dusky shark embryos to consume their siblings in the womb, reducing litter size to typically 3 to 14 pups per pregnancy.

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6. 03

   Commercial fishing pressure in the 1980s caused dusky shark populations off the U.S. Atlantic coast to decline by approximately 80 percent within two decades.

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7. 02

   The dusky shark's gestation period lasts approximately 28 months, making it one of the longest pregnancy durations among all shark species.

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8. 01

   Approximately 8 to 12 feet long, the dusky shark inhabits deep continental shelf waters and can live over 40 years in the Atlantic Ocean.

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