The hourglass dolphin is a species of marine mammal found in the Southern Ocean. They are known for their unique coloration pattern that resembles an hourglass shape. While hourglass dolphin is the most commonly used name for this species, there are other synonyms that refer to the same animal. Some of these synonyms include Skunk Dolphin, Black and White Dolphin, and Piebald Dolphin. These names are used based on variations of the hourglass pattern and the animal's coloring. Regardless of the name used, the hourglass dolphin is a fascinating animal that continues to fascinate scientists and marine life enthusiasts alike.