Our main research subject is the sperm whale, the largest of the toothed whales and we are using photo-identification analysis (photo-ID) to try and determine population size and migration patterns. Sperm whales develop a unique pattern along the trailing edge of their tail due to fatigue and this pattern can be used to identify individual animals. Since 1993 we have identified nearly 600 animals and by comparing our photos with the rest of the North Atlantic, we have found animals seen in the Azores that have also been seen in the Canaries and Madeira.
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Steiner, L., M.A. Silva, J. Zereba & M.J. Leal, 2007. Bryde's whales, Balaenoptera edeni, observed in the Azores: a new species record for the region., more
