bigblumafia.com · Dive Center
Current dive-site listing with reef shape, coral, and marine life.
Dive Spot Guide•
Shoulder
Shoulder: advanced Mafia Island drift with strong current
Scuba DivingBoatAdvanced
Reef
Make this a real next stop
Save it, log a dive, or explore nearby on the map.
Save it to come back later
Local operator required
Boat access, strong currents, and tide timing make a local operator the practical way to dive Shoulder.
Shoulder is a tide-driven edge-of-bay reef where experienced divers plan for strong current, boat access, and a current-led drift.
About Shoulder
Shoulder is a demanding boat drift on the edge of Chole Bay in Mafia Island Marine Park, where strong tidal flow sweeps a sloping reef with hard and soft coral. It suits experienced divers who can time the tide and want a current-led run with big schools of sweetlips and emperors, plus groupers, rays, morays, and guitarfish.
•
Research Estimate At Shoulder
Conservative baseline from public research. No community dives logged yet.
VisibilityVisibility: 20m
AccessChallenging entry effort
CoralHealthy coral
Aquatic LifeGreat variety
FacilitiesBasic facilities
CurrentVery strong current
Where Is Shoulder?
This spotNearby spots
Community sourced coordinates.
Shoulder Planning Details
Depth range, seasonality, and planning context.
Reported Depth
Up to 26m
Depth Note
Maximum depth is around 26 m.
Best Season
October to March, with November to February often the calmest window.
Typical Conditions
Strong tidal current, tide-sensitive timing, and a sloping reef on the edge of Chole Bay; outside-bay runs are more challenging than sheltered bay dives.
Safety & Access At Shoulder
Hazards, restrictions, and access requirements.
Key Hazards
Strong current
Safety Notes
Very strong current; experienced divers only.
Access Restrictions
Advanced divers only; tide timing drives departures, and the site is not a beginner or casual snorkel target.
Legal Notes
Mafia Island Marine Park entry fees apply at the gate.
Local Intel For Shoulder
Community notes to help plan your visit.
Scuba Diving
Advanced drift dive with strong tidal flow over a sloping reef; best suited to experienced divers comfortable in moving water.
Freediving
Not a good freedive target because the site is built around a strong-current drift profile.
Snorkeling
Not a good snorkel target; the current and drift conditions make it a scuba dive.
Shoulder Dive Conditions Planner
Use the planner to scan this week, inspect today in local time, and understand how exposure shapes conditions at Shoulder.
Current Snapshot
No data
🌥️Variable
Sunrise
No data
Time
No data
Sunset
No data
Surface / Entry
Wind No data · Tide No data
Sea State
Swell No data · Period unavailable
Visibility Outlook
Rain chance No data
Wind
No data
Swell
No data
Exposure Profile at Shoulder
Directional shelter context for incoming swell.
Exposure Note
Hourly forecast data is not available yet.
Recent Logged Visits At Shoulder
Community dive logs and visit reports for this site.
No Dive Logs Yet
Be the first to log a dive at this spot and share your experience!
Dive Spot Log Averages At Shoulder
Average conditions based on logged dives & visits.
Conditions
Avg. Visibility20m
Activity
No dive activity logged yet.
Loading nearby spots...
Shoulder Guide - Frequently Asked Questions
Planning answers for access, conditions, timing, and site logistics.
Shoulder Guide - Sources and Updates
Last Updated
Research Sources
stwetuproduction.blob.core.windows.net · Operator Faq
Operator FAQ covering seasonal access, visibility, and tide dependence.
www.diveplanit.com · Dive Directory
Independent dive guide for Shoulder at the edge of Chole Bay.
www.mafiadiving.com · Operator
Site sheet for Shoulder with current, depth, access, and marine life.
www.marineparks.go.tz · Official
Official marine park plan with Chole Bay current and habitat context.
Know this site? Improve Spot Details.
