Which cetacean species lives the longest?

Which cetacean species lives the longest?
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Last show’s winners were Tito and Chiara who correctly stated that Risso’s dolphins get their white scratches from fights with other dolphins involving a whole lot of biting. Now, for this week’s quiz: of all the species of dolphins, whales and porpoise, which individual species (according to the latest scientific research) is known to the live the longest, and how old can they get? Think you know the answer? Surf on over to thedolphnipod.com and click on Dolphin Quiz – leave your answer in the comments section. Winners will randomly be chosen from the correct answers, and will be announced on next week’s show.