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Wooden fishing boats pulled up on a wide sand beach below a green wooded headland under a hazy sky — Goa & the Grande Island

Goa & the Grande Island · India · Wall · Reef

Umma Gumma

A small wall on one side, a boulder slope on the other

Area photo: KenWalker kgw@lunar.ca · CC BY-SA 3.0

Umma Gumma is a line of rocks running east to west off Grande Island, and each side of it gives a different dive. The south face is a small wall from the surface to 12 m, while the north face is a gentle slope strewn with big boulders, so one site offers both a vertical and a sloping profile.

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Where it is and how deep

Depth profile of Umma Gumma: typical dive to 12 m (to 40 ft) 18 m · Open Water30 m · Advanced40 m · Recreational limit12 mtypical dive
Depths on a shared scale to 40 m (130 ft); dashed lines mark common certification limits.

15.3512° N, 73.7898° EApproximate position — the dashed circle shows where the site lies; your operator's briefing has the mooring.

The dive

The dive follows one face of the rock line or the other. On the south side the small wall runs from the surface down to 12 m, the deepest part of the site; on the north side the bottom is a gentle slope of big boulders that reaches only about 8 m.

Marine life and season

The sources we used don't single out particular species here.

Month-by-month season rating for Umma Gumma
JanFebMarAprMayJunJulAugSepOctNovDec
GoodGoodGoodGoodFairOff-seasonOff-seasonOff-seasonOff-seasonFairGoodGood

Season follows Goa & the Grande Island: Boats run mid-October to mid-May and stop for the monsoon from June; no month inside the season stands out.

Know before you go

  • Prone to currents that run either north to south or south to north along the rocks.

Sources

  1. Umma Gumma dive site — ScubaGo

More dive sites in Goa & the Grande Island

Wreck

Davy Jones Locker

Stern of a steel-hulled wreck for experienced divers

12–16 madvanced

Wreck

Double Boiler

Steamship wreck with boilers, pistons and propeller in place

15–19 mintermediate

Reef

Freddies Nook

Sheltered reef beside Suzy's Wreck for courses and intro dives

8–12 mbeginner

Reef

Grande Banks

A large field of plate coral between the two islands

5–13 mbeginner

Reef

Lobster Avenue

Coral reef wrapped around a rocky pinnacle

8–14 mbeginner

Wall

Secret Reef

A wall of stacked boulders ending in sand

6–12 mbeginner

Sand slope

Shelter Cove

Sandy training bay with a swim-through to a coral garden

3–12 mbeginner

Artificial reef

The Jetty

Ruined jetty that serves as a nursery for baby fish

4–10 mbeginner

Similar dives elsewhere

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Alidhoo Caves

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Large overhangs on the wall with sleeping stingrays and turtles

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A Montipora stand owning the wall from 16 to 35 m

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Sea fans and a cave at 40 m under a reef top anyone can dive

to 20 m · max 40 mintermediate