Reefwander
Scuba divers swim through a coral archway lit by shafts of sunlight on a Cozumel reef

Cozumel · Mexico · Wall · Drift · Reef

San Francisco Wall

A steep drop-off dived at 11 to 15 m, with frequent eagle rays

Area photo: Matthew T Rader · CC BY-SA 4.0

One of the shallowest wall dives on the island, worked between about 11 and 15 metres along roughly 800 metres of reef broken into three sections. The drop-off is steep and the current can run strong, and the reef is loaded with life. Eagle rays are seen frequently, and big grouper and green moray eels hold on the reef itself.

Also known as San Francisco.

Where it is and how deep

Depth profile of San Francisco Wall: typical dive 11–15 m (36–50 ft) 18 m · Open Water30 m · Advanced40 m · Recreational limit11 m15 mtypical dive
Depths on a shared scale to 40 m (130 ft); dashed lines mark common certification limits.

20.3918° N, 87.0274° WPublished position for this site.

The dive

The reef here runs about 800 metres and comes in three sections, each separated from the next by some 55 metres of open sand. On a moving day the current takes a group across those sand gaps quickly and the dive becomes three short reef passages rather than one continuous one; on a slow day there is time to work each section properly before crossing.

The wall is the shallowest on this stretch of coast, with the drop-off starting around 11 metres and the usual profile staying inside 15, so bottom times are longer than the southern wall dives allow. Eagle rays are seen frequently out over the edge, and the reef itself holds big grouper and green moray eels. The current is the variable to plan for: it can run strong here, and it decides how much of the reef you actually get to look at.

Marine life and season

  • Eagle rays
  • Groupers
Month-by-month season rating for San Francisco Wall
JanFebMarAprMayJunJulAugSepOctNovDec
PrimePrimePrimePrimeGoodGoodGoodFairFairFairFairGood

Season follows Cozumel: January–April is prime with December close behind; lighter trades keep the leeward side calm, though winter nortes can shut the port for a day. Peak hurricane risk falls in September and October.

Know before you go

  • The current here can run strong. Stay with the guide, keep the reef on one side, and do not try to swim back up-current to something you have passed.

Questions divers ask

How deep is San Francisco Wall?+

It is one of the shallowest wall dives on Cozumel, normally run between about 11 and 15 metres, with the drop-off falling away below that.

Sources

  1. San Francisco dive site — Scuba Du
  2. San Francisco Wall — Scubago

More dive sites in Cozumel

Reef sharks seen more often than anywhere else on Cozumel

12–18 madvanced

Cave & cavern

Sunlight streaking through a vaulted cavern ceiling

21–30 madvanced

Coral gardens on the shelf, steep drops below to 27 m

13–27 mintermediate

Sheltered reef just off Chankanaab National Park

10–20 mintermediate

Giant coral pinnacles cut with caves, tunnels and caverns

18–27 mintermediate

Permit cruising over coral heads on open sand

9–18 mintermediate

Similar dives elsewhere

Wall

Salt River Canyon

St. Croix · U.S. Virgin Islands

Two facing walls a quarter mile apart, cut by a prehistoric river

6–24 m · max 152 mintermediate

Wall

Buck Island Wall

St. Thomas · U.S. Virgin Islands

Stingrays and eagle rays cruising a multi-level reef wall

9–21 mintermediate

Wall

Football Field

Turks & Caicos · Turks & Caicos Islands

Wall top at 15 m with a lobster-covered sand flat at 21 m

15–21 mintermediate

Wall

Half Moon Caye Wall

Belize Barrier Reef · Belize

Garden eels on the sand, then a wall that falls past 914 m (3,000 ft)

to 15 mintermediate