Why do beaked whales return to a Navy sonar range despite frequent disturbance?

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Using data from underwater robots, scientists have discovered that beaked whales prefer to feed within parts of a Navy sonar test range off Southern California that have dense patches of deep-sea squid. A new study shows that beaked whales need these prey hotspots to survive, and that similar patches do not exist in nearby 'sonar-free' areas.

from Animals News -- ScienceDaily http://bit.ly/2Uopw2s

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