A special bond forges between a new diver and their instructor; it can be so strong it inspires the student to one day become a teacher. Here's the story of one diver who did just that.
With the sunflower sea star functionally extinct in most of its natural habitit, scientists are working to understand exactly what happend—and how to reverse it.
His nonprofit, Seacology, has launched 375 projects in 64 nations, protecting a total of over 1.4 million acres of threatened island terrestrial and marine ecosystems.