The Atlantic white-sided dolphin (Lagenorhynchus acutus) is a distinctively coloured dolphin found in the cool to temperate waters of the North Atlantic Ocean. The Atlantic white-sided dolphin was named by John Edward Gray in 1828. The specific name acutus comes from the Latin for 'pointed' and refers to the sharply pointed dorsal fin. L. acutus is one of six oceanic dolphins in the genus Lagenorhynchus. Like all species of the dolphin family, Atlantic white-sided dolphins are very social animals. Often traveling in large pods and display aerial behaviors as they travel. They have also been known to display violent behavior towards harbor porpoises, a similar behavior observed in bottlenose dolphins. Order: Artiodactyla, Infraorder: Cetacea, Family: Delphinidae, Genus: Lagenorhynchus, Species: Lagenorhynchus acutus (Gray, 1828).
