The ocean is large and resilient, but it is not too big to fail. What we are taking out of the sea, what we are putting into the sea are actions that… - Sylvia A. Earle

Our soaring population may suggest success as a species, but the environmental price of modern civilization is high, and our prosperity may be short-lived.

If I had to name the single most frightening and dangerous threat to the health of the oceans, the one that stands alone yet is at the base of all the others is ignorance: lack of understanding, a failure to relate our destiny to that of the sea, or to make the connection between the health of coral reefs and our own health, between the fate of the great whales and the future of humankind. There is much to learn before it is possible to intelligently create a harmonious, viable place for ourselves on the planet. The best place to begin is by recognizing the magnitude of our ignorance, and not destroy species and natural systems that we cannot re-create nor effectively restore once they are gone.

High on my short list of heroes for science-based ocean conservation is Graeme Kelleher, for 25 years the chairman of Australia's Great Barrier Reef Marine Park Authority, and for his entire career a proponent of marine protected areas.