Dolphins are endothermic. That means they keep their body heat, even in freezing water. Impressive, right? But they have limits.
Too cold? They migrate. The Pacific white-sided dolphin heads for warmer waters in winter. They’re basically snowbirds with fins.
Too warm? They dive deep. Cooler water at depth. Or they ride the shade of a cloud. Yes, I’m anthropomorphizing. I regret nothing.
So, their ideal habitat is 55°F to 75°F. That’s like a spring day in San Diego. Perfect.
