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Science 18 November 1977:
Vol. 198. no. 4318, pp. 755 - 756
DOI: 10.1126/science.198.4318.755
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Articles

The Photographic Determination of Group Size, Composition, and Stability of Coastal Porpoises (Tursiops truncatus)

BERND WÜRSIG 1 and MELANY WÜRSIG 1

1 Program for Neurobiology and Behavior, Department of Biology, State University of New York, Stony Brook 11794

During a 21-month study, 53 individual bottle-nosed porpoises were recognized by photographs of their dorsal fins. They traveled in small subgroups (mean size = 15) composed of a stable core of five animals plus other individuals that varied greatly from sighting to sighting.

Submitted on April 20, 1977


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Cetaceans.
B Wursig (1989)
Science 244, 1550-1557
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Science. ISSN 0036-8075 (print), 1095-9203 (online)