Answer:
There is a vast diversity of colors and patterns in the skins of the different dolphin species. While the most dolphins common species are gray, there are other species with black stripes, spots, scratches or bands. Even more, some species are pink.
Dolphins have a streamlined body which has several important and impressive adaptations to swim efficiently in the ocean.
Another important characteristic about the appearance of dolphins is their top fin, which is very representative of their anatomy, although there are a couple of finless species.