Thirteen male dolphins were observed as they swam in a shallow lagoon. Tabulations were made of who was swimming with whom. The table shows the observed frequencies.
Usage
dolphins_1
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Format
igraph object
References
R. C. Connor, R. A. Smolker and A. F. Richards, 1992, "Dolphin alliances and coalitions," in Coalitions and Alliances in Humans and Other Animals (Eds: A. H. Harcourt and F. B. M. deWaal). Oxford: Oxford University Press, 415-444.