The value of sharks' lives is now widely understood to be more important than their value as products. And when you have sharks in an area, it's a sign of good health. They're top predators, which means they feed on old, sick, and slower fish, keeping an entire population healthy.

There is this sweet spot in time when we have an opportunity to stop killing sharks and tunas and swordfish and other wildlife in the sea before it's too late.

The oceans deserve our respect and care, but you have to know something before you can care about it.

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

The most important part is to take on the challenge of protecting the ocean as if your life depends on it - because it does.

It's taken us a short time to change the nature of nature. In my lifetime, more change than during all preceding human history put together.

This much is certain: We have the power to damage the sea, but no sure way to heal the harm.