Biosphere 2 (B2) is a three-acre recreation of Earth’s diverse biomes, and serves as a hub for science education and student research.  Many of its younger visitors have never visited the ocean, and B2 provides their first introduction to marine ecosystems.  I am expanding B2’s K-12 ocean sciences curriculum to include modules on marine pollution and ocean acidification.  Students will engage in hands-on experiences, from tracking plastic debris in the Biosphere ocean to using ROV’s to survey ocean life.  They will explore the broader implications of their activities for the future of ocean ecosystems, and how students can shape that future, whether by simply recycling, or by becoming scientists themselves.  Ultimately, this curriculum will help students connect the distant ocean—the source of Arizona’s rainfall and the driver of the Sonoran Desert’s diversity—with their own lives.