Mr. Vonick said the low tide prevented the whale from leaving the rocks. All they could do was stay with the whale until the tide returned. Unfortunately the whale became weaker with each passing moment. Soon she had trouble holding her head above water. "At that point we stuck the oars under her pectoral fins and just tried to pry her off the rock," he said. "When we realized we could actually move her, we just grunted and groaned and used a lot of force and got her free."