Oslob Whale Shark is a regulated whale-shark encounter in Tan-awan, Oslob, where visitors register at a briefing center and head out by short outrigger boat to a shallow viewing area. Snorkelers and certified scuba divers can watch whale sharks in the zone, alongside tropical fish, remoras and the occasional turtle. Early morning is the best window, both for calmer water and lighter crowds. The experience is tightly managed, so expect rules, briefings and a short session rather than a free-roaming dive.