Dear Fellow Marmam Members, I'd like to call your attention to a new paper entitled "Does diving limit brain size in cetaceans?" by Marino et al. appearing in Marine Mammal Science, 2006, 22(2), p. 413-425. In this paper we address a longstanding hypothesis in the marine mammal field about whether the oxygenation demands of diving have placed a constraint on cetacean brain size. This notion - originally termed the Dive Constraint Hypothesis and introduced by Robin (1973) - has been addressed in various excellent papers through the years but a question remained as to the status of the hypothesis up until now. In our paper we apply a variety of statistical methods to a phylogenetically-controlled sample of cetacean brain and body size data to draw a final - and more definitive - conclusion about this hypothesis that we discuss in the context of these previous findings. Thanks for your time. Regards, Lori Marino -- Lori Marino, Ph.D.Neuroscience and Behavioral Biology Program 1462 Clifton Road, Suite 304 Emory University Atlanta, GA 30322 Phone: (404) 727-7582 Fax: (404) 727-7471 To protect the nature that is all around us, we must think long and hard about the nature we carry inside our heads."-- William Cronin