Every time I slip into the ocean, it's like going home.

Nothing has prepared sharks, squid, krill and other sea creatures for industrial-scale extraction that destroys entire ecosystems while targeting a few species.

I have lots of heroes: anyone and everyone who does whatever they can to leave the natural world better than they found it.

We want to think of ourselves as truly special creatures that are unique in the universe and, well, we are. And we have that capacity to wonder, to question, and to see ourselves in the context of all of life that has preceded the present time, and all that will go off far into the future, one way or another.

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

There are a lot of smart creatures out there. Dolphins, elephants, and whales are smart. And there are some really smart birds. I know some really intelligent fish. But they cannot know what humans know and are incapable of inflicting as much damage.

In the past few decades, Earth's natural systems have endured more pressure than in all preceding human history.