For humans, the Arctic is a harshly inhospitable place, but the conditions there are precisely what polar bears require to survive - and thrive. 'Harsh' to us is 'home' for them. Take away the ice and snow, increase the temperature by even a little, and the realm that makes their lives possible literally melts away.

I have come up at the end of a dive, and the boat was not where I left it. I had to take care of a buddy who did panic. But I was confident the boat would come back.

I've had the joy of spending thousands of hours under the sea. I wish I could take people along to see what I see, and to know what I know.

Sylvia Earle Quotes