The Risso’s Dolphin is very different in appearance than most of the other species. This is one of the few dolphin species where the males and females are almost going to be identical in size instead of the males being larger.
The square design of the head is one of the telling signs of the Risso’s Dolphin. They have a long dorsal fin as well as flippers that are recurved and pointed but also elongated. The body is stocky but it tapers as it moves from the front to the back of the body. They can be from 8 ½ to 13 feet long. They can also weigh as much as 880 pounds.
The square design of the head is one of the telling signs of the Risso’s Dolphin. They have a long dorsal fin as well as flippers that are recurved and pointed but also elongated. The body is stocky but it tapers as it moves from the front to the back of the body. They can be from 8 ½ to 13 feet long. They can also weigh as much as 880 pounds.
You will find this dolphin out there in a variety of colors. When the young are born, they are gray or brown in color with white areas. They may have yellow around the muzzle and white around the flippers. As the calves get older, they start to turn silver in color and then to a dark black color. They may keep their patches of white though as they mature. However, as they get to the age of maturity, they will get lighter around the flanks, abdominal area, and the head.
These dolphins feature teeth in the upper jaw that are pointed. In the lower jaw though they will have from 2 to 7 pairs of peg like teeth. This helps them with getting their prey, when they need to fight off predators, or when they are competing for mates or other resources.
(source:google/http://www.dolphins-world.com/)
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