On a personal level, this paper is related to Ken Norris' thinking about echolocation in marine mammals. He, as well as many others, initially believed that pinnipeds probably used echolocation. He changed his mind in September of 1966 after he heard a presentation by R. J. S. at the Animal Sonar Meetings in Frascati, Italy, about the unlikelihood that California sea lions use echolocation as compared to relying on other sensory modalities, particularly vision, to navigate and forage. As was characteristic of Ken, he saw the humor in all of this and proceeded to draw a fine cartoon (which he showed to R. J. S. later in private). It depicted R. J. S. as Don Quixote and Tom Poulter as himself, fleeing the point of a lance aimed at his rear.
DARK ADAPTATION AND VISUAL SENSITIVITY IN SHALLOW AND DEEP-DIVING PINNIPEDS1
Article first published online: 26 AUG 2006
Marine Mammal Science
Volume 15, Issue 4, pages 1303–1313, October 1999
How to Cite
Levenson, D. H. and Schusterman, R. J. (1999), DARK ADAPTATION AND VISUAL SENSITIVITY IN SHALLOW AND DEEP-DIVING PINNIPEDS. Marine Mammal Science, 15: 1303–1313. doi: 10.1111/j.1748-7692.1999.tb00892.x
- Issue published online: 26 AUG 2006
- Article first published online: 26 AUG 2006
- Received: 5 January 1998. Accepted: 5 May 1999
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