P. A. Prince a1, N. Huin a1andH. Weimerskirch a2 a1 British Antarctic Survey, Natural Environment Research Council, High Cross, Madingley Road, Cambridge CB3 0ET, UK a2 Centre d'Etudes Biologiques de Chize, Centre National de la Recherche Scientifique, F-79360, Villiers en Bois, France.
Studies of diving in seabirds have mainly been confined to penguins, alcids and cormorants. There are few data on the depths to which other seabirds dive although some species are known to have considerable abilities for diving and swimming underwater e.g. shearwaters (Kuroda 1954, Brown et
al. 1978), diving petrels (Prince & Jones 1992) and gannets (Adams & Walter 1993).
(Received November 1 1993) (Accepted March 22 1994)