The bull shark is the most well-known of the shark species that can move easily between salt and freshwater habitats. Their freshwater tolerance puts the bull shark at a distinct advantage over other shark species, as they can use low-salinity areas to both increase their hunting range, and as a protection for their young. In some areas, fresh and brackish coastal waters are used by bull sharks as nursery grounds where juveniles can grow and feed with a lower risk of predation by other species of large sharks. As adults, bull sharks mostly occupy shallow, coastal waters, and undergo seasonal migrations similar to other coastal species, likely for reproduction and feeding, and many occupy coral reef habitats in tropical seas.