On Earth Day, Think Blue.

Earth Day is a fitting occasion to celebrate the Big Blue.

While our planet may be called “Earth,” 71% of its surface is actually covered by water. This vast ocean makes our planet habitable—for us and all life. It produces half the oxygen we breathe. It moderates climate, absorbs carbon from the atmosphere, furnishes food and jobs to millions of people, and provides countless other services to humankind.

The ocean does so much for us. On Earth Day, surely we can return the favor. Whatever you’re planning to do today, there are actions you can take to protect the ocean.

• If you’re home doing some spring cleaning or just going about your daily chores, check out tips for making your domestic routine ocean friendly.

• If you’re out shopping, or if your family is planning a summer vacation, steer clear of jewelry, souvenirs, and home furnishing that use real coral and other marine animal products. To find alternatives to coral products, visit SeaWeb’s Too Precious to Wear site.

• If you’ve got your nose to the grindstone today, take a short break and check out The Ocean Project’s guide to making ocean-friendly choices at work. It covers professions from architect to wedding planner.

• If you’re headed out for dinner and movie tonight, make a themed date: grab a sustainable seafood guide and check out the new Disney Nature Oceans film. Be sure to let us know what you think by posting your comments on our blog or on Facebook.

Those are some of our ideas, but we want to hear yours. How are you celebrating Earth Day—and the ocean?