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- Title
MECHANICS OF REMORA REMOVAL BY DOLPHIN SPINNING.
- Authors
Weihs, Daniel; Fish, Frank E.; Nicastro, Anthony J.
- Abstract
The article reports on a study that uses a model to analyze the mechanics of dislodgement because of shear stresses and centrifugal forces experienced by the remora that is attached to a spinning dolphin. Results indicate that the dislodgement of the remora is possible. The spin has multiple functions in dislodging the remora. The spin realigns the remora on the dolphin body, while the centrifugal force radially aligns the unattached part of the body. These moves cause a greater surface area to be exposed to the water on reentry and more drag on the remora body on impact. The drag coefficient on the cylindrical body is 13 times that of the drag coefficient of the attached head of the remora.
- Subjects
MARINE mammal behavior; DOLPHIN behavior; CETACEA; CENTRIFUGAL force; ROTATIONAL motion; REMORA (Fish); WHALE sucker; ECHENEIDAE; MECHANICS (Physics)
- Publication
Marine Mammal Science, 2007, Vol 23, Issue 3, p707
- ISSN
0824-0469
- Publication type
Article
- DOI
10.1111/j.1748-7692.2007.00131.x