You might have heard this juxtaposition before: we know more about space than we do about the ocean. While it's tough to quantify that statement, the sentiment behind it is undeniably poignant. And there are those of us who aren't content to let the deep blue sea remain mysterious and neglected. Yesterday, June 8, people the world over celebrated World Ocean Day-which included ceremony, education, and conservationist action. World Ocean Day is not yet recognized by the United Nations, but The Ocean Project offers a petition you can sign if you'd like to make it an official holiday. There's also a wealth of information at the Association of Zoos and Aquariums. Get ready, the next unofficial World Ocean Day is only 363 days away.