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Killer whale predation on minke whales has been well documented. A study in 1975 found that in 49 killer whale stomachs, 84% had consumed minke whale. Minke whale carcasses investigated after attacks show that killer whales have an affinity for minke tongues and lower jaw. The anti-predatory mechanism of the minke whale is strictly a flight response, as when this fails no physical retaliation is observed. Chases most commonly lead into open ocean, although there have been records of minke whales inadvertently swimming into confined, shallow waters. There have been two recorded instances of minke whales ending high speed chases by hiding under a ship's hull, however, both instances were unsuccessful.