The Northern right whale dolphin is a marine mammal belonging to the Delphinidae family. It is a relatively small dolphin, measuring up to 2.8 meters in length and weighing up to 145 kg. These dolphins are known for their distinctive black and white coloration, with an almost straight dorsal fin. Synonyms for the Northern right whale dolphin include Pacific right whale dolphin, right whale dolphin, and lissodelphis borealis. These names are based on the geographic region where the species is found, its resemblance to the right whale, and its scientific classification. Although the Northern right whale dolphin is not as well-known as other dolphin species, it is an interesting and unique animal that plays an important role in the marine ecosystem.