The technology is already paying dividends. Divers have already studied coral species fighting each other with chemicals, coral polyps hugging each other and algae invading in the midst of coral bleaching (when coral polyps eject as a result of hot ocean temperatures, leaving the coral vulnerable). And of course, there's a ton of potential. Scientists already want to study particles above the coral to see how water flow keeps it alive, and it's easy to see the microscope coming into play whenever lab studies just aren't enough.