
Mnemba South Wall
Mnemba Atoll · Tanzania
The south face of Mnemba Atoll drops in a series of dramatic terraces from 8 m down to 40 m, each ledge hosting its own community of coral and creatures. Hawksbill turtles are almost guaranteed here, threading between enormous sea fans with relaxed indifference to divers. Whitetip and blacktip reef sharks cruise the deeper terraces in small groups, and the wall itself is encrusted with so many soft corals that it resembles a living tapestry in shades of orange, purple, and white. The current running along the south face lifts plankton and draws in vast schools of fusiliers that shimmer like mercury when the light hits them.
Conditions
Depth
8 to 40 m
Advanced depths
Current
Can be moderate
Can pick up on the edge
Visibility
15 to 28 m
Clearest in the calm season
Water
24 to 30°C
3 mm full suit
Month by month
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Water (°C) | 27 | 27 | 28 | 28 | 26 | 25 | 24 | 24 | 25 | 26 | 27 | 27 |
| Vis (m) | 15 | 15 | 12 | 8 | 8 | 12 | 15 | 15 | 15 | 18 | 18 | 15 |
| Current | Gentle | Gentle | Gentle | Moderate | Moderate | Strong | Moderate | Moderate | Gentle | Gentle | Gentle | Gentle |
Your chances of seeing each animal
House Crow
Last confirmed Jun 6, 2026 · 52 records
Almost always
Nearly every dive
Red-Knobbed Sea Star
Last confirmed Jul 3, 2026 · 39 records
Very likely
Most dives
Rough-Scaled Plated Lizard
Last confirmed Jul 4, 2026 · 36 records
Very likely
Most dives
Giant Barracuda
Last confirmed May 14, 2025 · 1 records
Likely
About 6 in 10 dives
Hawksbill Sea Turtle
Expected
Known here, not yet in recent logs
Blacktip Reef Shark
Expected
Known here, not yet in recent logs
Bumphead Parrotfish
Expected
Known here, not yet in recent logs
Gear