Thanks to the Dutch-born inventor and founder of the nonprofit The Ocean Cleanup, Boyan Slat, more than half of the plastic that makes up the Great Pacific Garbage Patch could be gone in just 5 years. For bold entrepreneurship and dedication to ridding our oceans of harmful plastics, he is Scuba Diving’s August 2017 Sea Hero. Sponsored by Seiko Watches, he is awarded a Seiko Prospex PADI Special Edition dive watch.