We wanted the original film to warn people what nature could do to New Orleans. Then we watched it happen.

Not only have I made films about the subject, but I've largely funded them on my own, so I'm fully committed to doing whatever I can to change the audience's respect and appreciation for the ocean. In 100 years I want whales, dolphins and sharks to still be around, and the ocean to be a healthier place.

What's happening on the Colorado River is happening all over the world. The water is overused, overdammed, and it's polluted in some places.

I love the ocean; growing up around Laguna Beach, I spent my summers surfing, diving, and snorkeling.

Flying through a hurricane is the most fearsome shaking you will ever get. Everything has to be tied down in the airplane. And the IMAX camera has to be rock-steady through all this. We had to design special mounts on the left and right sides of the cabin and in the cockpit to hold the cameras.

My goal is that after seeing 'Grand Canyon,' every person in the audience will go home knowing they have to conserve water: even something as simple as installing a low-flow toilet or showerhead, or turning off the faucet while they're brushing their teeth.