On Sunday 12 February, the Esperanza received a distress call. This time it was from the Japanese Government whaling fleet's unarmed sighting vessel, the Kaiko Maru, claiming a collision with the Sea Shepherd vessel Robert Hunter. "We completely condemn any violent action by anyone. Potentially endangering lives in the middle of the Southern Ocean is unacceptable," said Karli Thomas, expedition leader on board the Esperanza.