Blue World Diving is the in-house PADI dive center of Kinasi Lodge, a beachfront lodge on Mafia Island, Tanzania, within the Mafia Island Marine Park. The island's reefs, running from Mafia south to Kilwa, offer shallow to deep sites with an unusually rich variety of hard and soft coral, along with bommies, channels, walls, caves, drift dives and night dives, much of it still unexplored. Mafia is also known for seasonal whale shark encounters. The surrounding shallow reefs and constant tidal movement give strong visibility for snorkeling as well as diving, suiting both beginners and experienced divers.