The Khaled bin Sultan Living Oceans Foundation has a great website that features scientific data and educational tools. They have also produced detailed maps for many of the never-before-seen reefs we had the good fortune to dive during the "Global Reef Expedition." They are in the process of adding more and more data layers to these maps at this site: (as of June 28, 2018), the site was still under construction. 

For educational tools on marine biology, with a focus on coral reefs, go here