Protected areas provide hope that the creatures of Ed Wilson's dream of an encyclopedia of life, or the census of marine life, will live not just as … - Sylvia A. Earle

Sometimes, I try to imagine what intelligent aliens, viewing Earth from afar, might think about the sea. From their perch in the sky, they could immediately see what many earthlings never seem to grasp: that this is a planet dominated by saltwater! In fact, the ocean is the cornerstone of the systems that sustain us: every breath we take is linked to the sea.

I now know, the horseshoe crab and thousands of other ancient, resilient creatures may not survive the impact my species has had on the living world, largely in a single century. More worrisome, humankind may not survive for long, either, unless we use our remarkable capacity to learn from the past, anticipate the consequences, and take actions that will ensure an enduring future. As it turns out, the future of the ocean, the creatures who live there, and our own future are inextricably linked.

The poet W. H. Auden said, "Thousands have lived without love; none without water." Ninety-seven percent of Earth's water is ocean. No blue, no green. If you think the ocean isn't important, imagine Earth without it. Mars comes to mind. No ocean, no life support system.