Digging in the deep: killer whales' advanced hunting tactic.

Autor:	Nøttestad, Leif, Fernö, Anders, Axelsen, Bjørn E.
Předmět:	KILLER whale HUNTING MARINE ecology AQUATIC ecology FISHES AQUATIC animals
Zdroj:	Polar Biology; Dec2002, Vol. 25 Issue 12, p939-941, 3p
Abstrakt:	We document one of the most spectacular predator-prey interactions observed in a marine ecosystem, in which groups of killer whales force tens of tons of herrring out of their safe deep-water habitat to the surface where the whales are superior. Killer whales performing this hunting tactic congregate in large groups, dive to the limit of their capacity, lift herring vertically more than 150 m by coordinated action, and split large aggregations of fish into small, dense schools before attacking them. [ABSTRACT FROM AUTHOR]
Databáze:	Complementary Index
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