Stenella

Stenella is a genus of dolphins, family Delphinidae, comprising five currently recognized species: the pantropical spotted dolphin, the Atlantic spotted dolphin, the spinner dolphin, the Clymene dolphin and the striped dolphin, found across tropical and temperate seas worldwide, with the striped dolphin's range extending into the Mediterranean. The genus name derives from the Greek word for narrow; individuals of the spotted species are typically born without spots and develop darker spotting with age, and members are generally more active at night, spending roughly 60 percent of daylight hours resting.