George Sarelakos

The recent mission by the Aegean Rebreath organization to clear the seabed off the island of Santorini collected 800 kilos of abandoned fishing nets, 406 potentially recyclable materials, 28 car tires and 30 items of clothing.

Dressed all in black and preparing his diving gear with loud zips and clicks, George Sarelakos looks like he's part of a Greek naval operation ready to storm an island or take down smugglers. He's not - but he and four other volunteer divers do have a challenging mission: Clearing the plastic trash from the sea floor that's suffocating Greece's marine life.