Dolphins in action
Playful Dolphins taking time out from rounding up the sardine bait balls.
The Common dolphin is the name given to two species (and possibly a third) of dolphin making up the genus Delphinus.
Prior to the mid-1990s, most taxonomists only recognised one species in this genus, the Common Dolphin Delphinus delphis. Modern cetologists usually recognise two species - the Short-beaked Common Dolphin, which retains the systematic name Delphinus delphis, and the Long-beaked Common Dolphin Delphinus capensis. Some studies suggest that a third species, the Arabian Common Dolphin (D. tropicalis), can be characterized by an extremely long and thin beak and found in the Red Sea and Indian Ocean. (wiki)