Narwhal and orca predation risk
Orcas, or killer whales, are among the few natural predators capable of hunting adult narwhals. Historically, heavy summer sea ice kept orcas out of much of the narwhal's range for long stretches, but as ice retreats orcas can enter Arctic waters earlier and stay longer, increasing the threat. When orcas are near, narwhals often respond by moving into shallow water close to shore or ice, staying still, and reducing the deep dives and movements that might attract attention. These anti-predator tactics can interrupt normal feeding. The expanding overlap between orcas and narwhals is an emerging concern in a warming Arctic.
Sources: NOAA Fisheries — Narwhal; IUCN Red List — Narwhal (Monodon monoceros); NOAA Fisheries — Killer Whale; IUCN Red List — Killer Whale (Orcinus orca). Educational information only. See our sources & fact-check policy.
Frequently asked questions
Main predator of the narwhal and orca predation risk?
Orcas (killer whales)
Trend of the narwhal and orca predation risk?
Less ice lets orcas range farther into narwhal habitat
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