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How Bull Sharks Survive In Freshwater 😨

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Zack D. Films

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100,730 次观看 • 1 个月前 •via X (Twitter)

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Bull sharks are a dangerous river menace. These sharks are uniquely adapted to live in both saltwater and freshwater, allowing them to travel far up major rivers like the Amazon and the Mississippi. Bull sharks have special organs that allow their body’s adaptations for freshwater. To keep bodily balance, their kidneys, liver, and rectal glands adjust salt and urea production. Bull sharks pee up to 20 times more often in freshwater to push out extra water. Fresh water changes their buoyancy (how the float), making them swim differently than the do in the sea. In the Amazon River, bull sharks are found as far as 2,485 miles (4000km) inland in Peru and Bolivia. In the Mississippi River, they have been recorded up to Alton, Illinois, roughly 700 miles from the ocean. Their movement upriver increases during specific seasonal migrations. Frequently spotted in warm estuarine networks like Swan Canning Riverpark and local coastal rivers. We all should make sure we pay attention when swimming in rivers and lakes. You never know what’s lurking in the water.
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Bull sharks are a dangerous river menace. These sharks are uniquely adapted to live in both saltwater and freshwater, allowing them to travel far up major rivers like the Amazon and the Mississippi. Bull sharks have special organs that allow their body’s adaptations for freshwater. To keep bodily balance, their kidneys, liver, and rectal glands adjust salt and urea production. Bull sharks pee up to 20 times more often in freshwater to push out extra water. Fresh water changes their buoyancy (how the float), making them swim differently than the do in the sea. In the Amazon River, bull sharks are found as far as 2,485 miles (4000km) inland in Peru and Bolivia. In the Mississippi River, they have been recorded up to Alton, Illinois, roughly 700 miles from the ocean. Their movement upriver increases during specific seasonal migrations. Frequently spotted in warm estuarine networks like Swan Canning Riverpark and local coastal rivers. We all should make sure we pay attention when swimming in rivers and lakes. You never know what’s lurking in the water.

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