Concept explainers
Interpreting Data Marine mammals, such as seals, whales, and dolphins, have adapted to their watery environment in many ways, including a respiratory system that allows for long underwater dives and a language used to communicate through water Another adaption studied by researchers involves bottlenose dolphins. These dolphins spend approximately 33% of a 24-hour day with one eye open and the other closed, alternating which eye is open and which is closed at intervals of approximately 1 hour. During this time, the animals continuously swim and intermittently rise to the surface of the water to breathe air. Look below at data collected on brain activity in bottlenose dolphins. Why do the dolphins swim with one eye open and the other eye closed—that is, what are they doing? How does their brain activity relate to what is happening with their eyes? Why might this be a successful adaptation?
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Campbell Essential Biology with Physiology (6th Edition)
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