On 24 August 1994 an unusual interaction between short-finned pilot whales (Globicephala macrorhynchus) and sperm whales (Physeter macrocephalus) was observed during a study of acoustic and surface behavior of sperm whales in the north central Gulf of Mexico (28°43.20’N, 88°44.13’W). We report here the defense reaction of sperm whales to the presence of pilot whales and give an indication of the generality and rate of interactions such as this from studies of tracked sperm whales in the South Pacific…
Weller, D. W., B. Würsig, H. Whitehead, J. Norris, S. K. Lynn, R. Davis, N. Clauss, and P. Brown. 1996. Observations of an interaction between sperm whales and short-finned pilot whales in the Gulf of Mexico. Marine Mammal Science 12(4):588-593.