Saltwater Environments
Dolphins and sharks primarily live in saltwater, or marine, environments.
Dolphins
* Found worldwide in all oceans, both warm and cold.
* Prefer coastal areas but also inhabit the open ocean.
* Some species, like the Amazon River dolphin, live in freshwater.
Sharks
* Found worldwide in all oceans, though some species prefer specific climates.
* Inhabit various depths, from shallow coastal waters to the deep ocean.
* A few species, like the bull shark, can tolerate freshwater briefly.
Most dolphins and sharks reside in saltwater oceans.