With care and protection, with safe havens in the ocean, there is still a good chance that we can turn things around.

In terms of personal choices, let's all think more carefully about where we get our protein from.

The best scientists and explorers have the attributes of kids! They ask question and have a sense of wonder. They have curiosity. 'Who, what, where, why, when, and how!' They never stop asking questions, and I never stop asking questions, just like a five year old.

Meat reared on land matures relatively quickly, and it takes only a few pounds of plants to produce a pound of meat.

I actually love diving at night; you see a lot of fish then that you don't see in the daytime.

I've always said, 'Underwater or on top, men and women are compatible.'

Never again will we have this good a chance as we now have to find an enduring place for ourselves within the natural systems that keep us alive. It's a sweet spot in history. That's why this is such a critical time.