Do bull sharks go up the Hudson River?

There have been reports of them in the Hudson. From time to time you see seals in the Hudson as well, Brian Kotsol added. Saltwater is not the only turf for a shark.... it's been reported of sharks swimming up to 100 miles up rivers for a long time. Bull sharks have been reported in the past swimming in the Hudson.



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The bull shark is commonly found worldwide in coastal areas of warm oceans, in rivers and lakes, and occasionally salt and freshwater streams if they are deep enough.

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But Bull Sharks are able to recycle salt in their kidneys, maintaining salt levels critical to its survival. Yet even the Bull Shark would not be able to make its way into the Great Lakes watershed and survive! The water temperature in the Great Lakes is far too cold for most sharks (including the Bull Shark).

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Experts say it's safe to swim in most of the Hudson most of the time — though things get dicey after it rains.

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Notably, Lake St. Lucia has become a vital nursery area for bull sharks in the southwestern Indian Ocean, illustrating their remarkable ability to thrive in diverse environments. On the other side of the globe, in Panama, the impoundment of the Bayano River led to the landlocked existence of bull sharks in Lake Bayano.

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Lake Nicaragua is the only freshwater lake containing oceanic animal life, including sharks, swordfish, and tarpon. More than 40 rivers drain into the lake, the largest being the Tipitapa River.

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