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NOAA Fisheries conducts research to better understand the endangered population of Southern Resident killer whales to inform protection and recovery efforts
© NOAA Fisheries Northwest Fisheries Science Center
Endangered killer whale nighttime behavior
Underwater ship noise can disrupt the whales' use of echolocation, a series of rapid clicks, to detect, track and capture prey. That limits their foraging opportunities and forces them to expend extra energy at a time when they can least afford it.