powerboatorca flipping yachtsShare on FacebookShare on Twitter480IMAGESShocking moment orcas attack yachts smashing their heads into vesselsWatch: Ocean Race yachts attacked by orca as behaviour spreads toWhy have Orcas been attacking yachts? A puzzling mysteryTerrifying moment orca sinks yachtWhy are orcas attacking boats? Gladis the killer whale, out for revengeJuvenile orcas imitate White Gladis, attacking yachts off the Iberian
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