Here's a breakdown:
* Atlantic Ocean: This is home to many dolphin species, including bottlenose dolphins, common dolphins, and Atlantic spotted dolphins.
* Pacific Ocean: The Pacific is the largest ocean and boasts a wide diversity of dolphins, such as the Pacific white-sided dolphin, the common dolphin, and the spinner dolphin.
* Indian Ocean: This ocean also supports a diverse dolphin population, including the Indo-Pacific bottlenose dolphin, the humpback dolphin, and the Indian Ocean bottlenose dolphin.
* Arctic Ocean: While the Arctic is cold, it is home to the white-beaked dolphin, the beluga whale (which is a type of dolphin), and the harbor porpoise.
* Southern Ocean: Surrounding Antarctica, the Southern Ocean is home to the Antarctic dolphin and the dusky dolphin.
Remember that some species of dolphins are also found in estuaries, rivers, and coastal waters.