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Why are bull sharks not true freshwater sharks?

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Although there are a handful of species that live in freshwater, we tend to think of sharks as being ocean dwellers. But there is also a very unique shark that can live in both ocean and fresh water estuaries and lakes: the Bull Shark. read more

Conversely, saltwater fish (and plants, for that matter) will perish in freshwater because their bodies flush too MUCH salt out of their system. Eventually their cells wither and die from under hydration — an ironic fate to experience when you’re living underwater. For some reason, bull sharks have evolved the ability to osmoregulate. read more

For the most part, the confusion about freshwater sharks is attributed to the fact that the term is also used for certain species of bony fish which are not true sharks. read more

The bull shark does not rear its young; the young bull sharks are born into flat, protected areas. Coastal lagoons, river mouths, and other low-salinity estuaries are common nursery habitats. read more

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