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Published online by Cambridge University Press: 21 February 2005
A herd of female sperm whales with calves was observed for the first time off the coast of Monaco in mid December 2001. The herd was composed of more than ten animals: the adults were foraging; the calves were resting. The adult whales measured less than 12 m in length and the calves were estimated to be 5 m. This occurrence is discussed.