Kinetic Sonar Avoidance Behavior Alters Dive Profiles in Cuvier’s Beaked Whales

Tagging data show that Cuvier’s beaked whales can modify dive depth and ascent timing when exposed to mid-frequency sonar.

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Beaked whales often stop echolocating when disturbed, making them even harder to detect acoustically during exposure events.

Controlled exposure experiments have documented changes in dive behavior when Cuvier’s beaked whales detect sonar signals. Tagged individuals sometimes cease foraging clicks and adjust ascent rate. Behavioral shifts may include shallower dives or prolonged surface intervals. Such responses can reduce feeding efficiency and alter nitrogen management. Research integrates acoustic exposure levels with movement data to quantify reaction thresholds. The findings underscore sensitivity of deep-diving species to anthropogenic sound. Behavioral flexibility does not guarantee safety if disturbance persists. Dive profiles reflect both physiology and environment. Reaction becomes adaptation under stress.

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Behavioral evidence informs regulatory thresholds for sonar use. Environmental compliance frameworks require monitoring and mitigation in known habitats. Scientific documentation strengthens arguments for precautionary practice. Military and industrial operators increasingly rely on real-time acoustic detection systems. Policy evolves alongside empirical evidence. Response data shape operational boundaries. Science defines limit.

For analysts reviewing dive traces, subtle shifts reveal disturbance invisible to casual observation. The irony is adaptive: the same behavioral plasticity that allows survival may signal vulnerability. Cuvier’s beaked whales respond to sound in ways that expose physiological risk. Reaction carries cost. Depth cannot shield against vibration. Evidence lies in altered descent.

Source

National Oceanic and Atmospheric Administration

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