Experts observe whale hunt noise

BBC: Scientists on Shetland believe they may have discovered a previously-unobserved technique being used by killer whales to catch herring. Researchers from Aberdeen and St Andrews Universities recorded the whales emitting a low-pitched noise which caused the fish to bunch up. The mammals then stun the fish with their tails before eating them. The scientists said this behaviour has not been seen anywhere else in the world. The findings have come to light in the BBC2 ......
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