Derived from an old diminutive of MARTIN. MAXWELL Scottish. From a place name meaning Mack's stream, from the name Mack, a short form of the Scandinavian name MAGNUS, combined with Old English wella stream ...
For the ray-finned fish known as common dolphin, see Mahi-mahi. 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.
Dolphins are marine mammals known as cetaceans and are related to whales and porpoises. They range in size from the 4 foot Mauiâs dolphin to the 30 foot orca or killer whale. They band together in social groups called pods, and hunt for food such as squid or schools of smaller fish.ith over 40 species throughout the world, dolphin populations and species are found in many locations. The largest of the dolphin species is the Orca or killer whale, which is mostly located in the cold polar waters.