Sea lions leave Galapagos because of climate change?

Today we are enlightened by the BBC and its popular story of the poor, innocent sea lions, which are “endemic” to the famous Galapagos Islands in the Eastern Pacific Ocean, who have been driven out of their apparently pristine and untouched paradise by the evil clutches of climate change/global warming/global climate change/whatever the phrase now is (I’ve long given up trying to keep track). They have neglected to mention the possible other, and far more likely reasons, that the sea lions left and the increase in water temperature.