. Ecology and behavior of the Manatee (Trichechus manatus) in Florida . Fig. 17. Posterior view of a cruising manatee. Drawings were made from an 8- mm film sequence and encompass one full undulation of the tail. Coordinates illustrate body's relative displacement along a vertical axis. Number indicates num- ber of film frame. slight positive dihedral, which results in deflection of the caudal and lateral margins during downswings. Manatees initiate move- ment from a stationary position by an upswing of the tail followed by a downswing, repeated until the undulatory rhythm is estab- lished.

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Keywords: ., bookcentury1900, bookcollectionbiodiversity, booksubjectmammals