The number one issue that Ocean Mysteries has opened my eyes to is, no matter where you are, whether you're on a beach in Hawaii, you're diving in the Pacific, you're in a remote archipelago, or you're in the middle of nowhere - I am blown away and sobered and crushed, emotionally crushed, by the amount of marine debris, of garbage, that is now in our ocean.

We live in a time where we have more extinction happening on our planet than since the dinosaurs were wiped out 50 million years ago.

I think the hardest part about my job is the best part of my job - the travel.

Many of the medicines we use today, to fight everything from AIDS to cancer, originate as a toxin in an amphibian skin. When we lose these animals, we lose resources. We lose keystone species in the environments where they live.

Many scientists would argue that we are now in what is called Extinction, and it's caused by this perfect extinction storm: climate change, habitat loss, pollution, unsustainable exploitation of species and habitat resources, and of course, human population explosion. All of these factors work together and conspire to drive a species to extinction on our planet, every half an hour.

We know that when push comes to shove, [we can] drive ourselves to save our planet.

I think a human animal is far more wild and unpredictable and dangerous and destructive than any other animal.