To catch a wild stingray, Zeb teams up with local expert Dr. Nantarika Chansue and a commercial fishing guide as they search central Thailand’s rivers and estuaries in search of this enigmatic bottom feeder. We document one of the world’s first field studies on this critically endangered population. Where do they hide? How big do they get? On camera, Zeb tags what could be the world’s largest freshwater fish, weighing up to 450 kg.