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Grande Island dive-trip setup and October-to-May operating window.
Dive Spot Guide•
Umma Gumma
Rocky Grande Island reef with a short wall and boulder slope.
Boat-accessed Grande Island reef; mild current and surge can change the route, so it works best on calm days with a local operator.
About Umma Gumma
Umma Gumma is a rocky Grande Island reef with a clear line of outcrops and sand patches that makes the dive easy to read. The south side forms a short wall and the north side rolls into a boulder slope, so route choice changes with current and sea state. It suits calmer-day boat dives and rewards slow scanning of the rock gaps. Expect patchy coral, snappers, groupers, barracuda, and other mixed reef fish.
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Research Estimate At Umma Gumma
Conservative baseline from public research. No community dives logged yet.
VisibilityVisibility: 7m
AccessModerate entry effort
CoralMixed health
Aquatic LifeGreat variety
FacilitiesBasic facilities
CurrentLight current
SurgeLight surge
Where Is Umma Gumma?
This spotNearby spotsExplore nearby spots on the map
Community sourced coordinates.
Umma Gumma Planning Details
Depth range, seasonality, and planning context.
Reported Depth
0m - 12m
Depth Note
South side wall from surface to 12 m max; north side slopes from surface to about 8 m.
Best Season
October to May, when seas are calmer and monsoon conditions are less reliable.
Typical Conditions
Prone to currents that may flow either north-to-south or south-to-north.
Safety & Access At Umma Gumma
Site conditions, restrictions, and access requirements.
Site Conditions
Strong current
Safety Notes
Currents can run in either direction (north–south or south–north).
Access Restrictions
Boat-only access and sea-state dependent.
Legal Notes
Treat the coral area as sensitive and follow local marine-protection and boat-safety rules.
Local Intel For Umma Gumma
Community notes to help plan your visit.
Scuba Diving
Rocky reef with a short wall on the south side and a gentler boulder slope on the north side; a good boat dive when current and surge stay light.
Freediving
Possible only in calm conditions; the boat access and current make scuba the more practical choice.
Snorkeling
Secondary option only on very calm days; the reef line is more rewarding once you are underwater.
Wildlife at Umma Gumma
Species commonly reported at this site, with direct links into their wildlife guides.
Recent Logged Visits At Umma Gumma
Community dive logs and visit reports for this site.
Dive Spot Log Averages At Umma Gumma
Average conditions based on logged dives & visits.
Conditions
Avg. Visibility7m
Activity
No dive activity logged yet.
