Mashable: More than 70% of the Earths surface is covered in water. About 97% of it exists in our oceans.
But the oceans aren't just full of aquatic creatures and colorful coral that comprise the perfect snorkel scenery. Major problems lurk on top of, and especially beneath the surface -- problems that need our attention. That's why we need World Oceans Day.
See also: 5 major threats to biodiversity, and how we can help curb them
Led by The Ocean Project, World Oceans Day is celebrated June 8 with...