Atlantic White Sided Dolphin
- Scientific name: Lagenorhynchus acutus
- Length: 8 – 9 feet
- Weight: 400 – 500 lbs
- Population seen in the Northeast*: over 63,000
- Status: Protected
- Description: Distinctive color pattern, top is black and sides are gray with a yellow streak (starting from behind the eye) and a white streak (below the dorsal fin) that extends all the way to the fluke. Can be confused with the white-beaked dolphin.
* Gulf of Maine Population