Zanzibar and neighboring Mafia Island offer an intoxicating blend of Swahili culture and Indian Ocean marine life, headlined by reliable whale shark encounters off Mafia Island's coast. The reefs here remain refreshingly uncrowded and untouched compared to more popular destinations, and the cultural experience of Stone Town adds depth beyond diving. Mafia Island Marine Park protects some of Tanzania's healthiest coral systems.
Whale Sharks and Untouched East African Reefs
Visibility30–80 ft
Temperature76–84°F
Max Depth100 ft
Currentmild
2-Tank Dive$80
Best MonthsOctober, November, December, January
Score Breakdown
Marine Life Diversity
72.0
Coral & Reef Health
68.0
Visibility & Conditions
55.0
Dive Site Variety
58.0
Water Temperature
85.0
Depth & Access
65.0
Operator Quality
62.0
Topside Experience
78.0
Getting There
58.0
Value & Cost
82.0
Crowding
85.0
Social Proof
62.0
Key Species
whale sharkgreen turtlehumpback whaleoctopuslionfishNapoleon wrasse
Dive Types
reefwhale sharkdriftnight
Top Operators
One Ocean Diving
PADI
4.6
380 reviewsNITROX
Mafia Island Diving
SSI
4.4
190 reviews
Scuba Do Zanzibar
PADI
4.5
310 reviewsNITROX