We are blessed with a place that is open to the universe and, despite this, supports this very thin envelope of air we call atmosphere, which holds just the right amount of oxygen for us to breathe.

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

If you think the ocean isn't important, imagine Earth without it. Mars comes to mind. No ocean, no life support system.

Why is it that scuba divers and surfers are some of the strongest advocates of ocean conservation? Because they've spent time in and around the ocean, and they've personally seen the beauty, the fragility, and even the degradation of our planet's blue heart.

We have been far too aggressive about extracting ocean wildlife, not appreciating that there are limits and even points of no return.

It has taken these many hundreds of millions of years to fine-tune the Earth to a point where it is suitable for the likes of us.

If I seem like a radical it's because I have seen things that others have not.