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Fig. 1. Diagram illustrating potential problems in attempting to infer mechanisms
of navigation from the tracks of animals. (A) Overhead view of the track of a
hypothetical sea turtle moving hundreds of kilometers through the ocean and
monitored with satellite telemetry; events that occurred along the way are
indicated. (B) A plausible but erroneous interpretation of the turtle's path.
In this hypothetical example, researchers unaware of what happened in the
ocean superimposed the track on several topographical and geophysical maps
until correlations were found between changes in the turtle's behavior and
specific features of the environment. These environmental cues were then
assumed to have elicited the behavioral changes, leading to incorrect
inferences about navigational mechanisms.
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