I've never heard of attacks: Scientists confused by orcas harassing boats
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A series of orca attacks on sailboats along the coast of Spain and Portugal has left scientists baffled. Many sailors have sent distress calls after orca attacks have left their boats seriously damaged and crew members injured in the last two months. In one instance, a 46-foot delivery boat was surrounded by nine orcas that were all ramming the boat for one hour, causing it to spin 180 degrees and the engine to shut down.