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The dive site Dome Rock reef is an offshore rocky reef in the Simon's Bay area of False Bay, near Cape Town in the Western Cape province of South Africa.

Understand[edit]

Map of the dive site at Dome Rock
Divers at safety stop at Dome Rock reef
See also: Diving the Cape Peninsula and False Bay#Understand

Position[edit]

1 Dome Rock reef: S34°11.119' E18°27.776' — (16m pinnacle)

This site is in a Marine Protected Area (2004). A permit is required. The site is almost entirely within the Boulders Restricted Zone of the Cape Peninsula Marine Protected Area

Name[edit]

The site was named "Dome Rock" by the first diver known to have dived there, who reported a large domed pinnacle.

Depth[edit]

Maximum depth is about 25 m on the surrounding sand, and the top of the pinnacle is about 16 m. (Average depth for a dive is likely to be about 22 m.)

Visibility[edit]

Visibility is likely to be similar to the nearby reefs, but may be a bit better than the shallower areas if there is a significant swell.

Topography[edit]

The site comprises two adjacent areas of reef. To the south there is a large outcrop of granite, rising from the sand bottom at about 24 m to a small pinnacle at about 16 m. This area of reef is about 60 m from east to west and about 40 m from north to south, with the pinnacle about central on the south edge. The northern section is similar in size, but relatively flat and quite close to the southern section across a sandy gap with scattered boulders. There are other outlying areas of low reef to the south and west that have not yet been surveyed, and no information is available about them.

Geology: Pre-cambrian granite of the Peninsula pluton, surrounded by fine quartz sand.

Conditions[edit]

The site is exposed to south easterly winds and waves, so should be dived in westerly winds. The site is reasonably protected from swells from the south west.

The site is usually at it's best in autumn, winter or spring, but there are also occasional opportunities in summer.

Get in[edit]

See also: Diving the Cape Peninsula and False Bay#Boat dives

This reef is only accessible by boat. The site is about 3.2 km from Simon's Town jetty, or 4.6 km from Miller's Point slipway.

See[edit]

Marine life[edit]

See also: Diving the Cape Peninsula and False Bay#The marine ecology

The reef is typical for this region and depth range. There is the usual heavy encrustation of echinoderms, including feather stars, brittle stars and sea cucumbers, and a moderate number of sea fans, soft corals and anemones. There will probably be small shoals of hottentot seabream and a few other reef fish, like klipfish, fingerfins and Roman.


Photography[edit]

Macro photography is likely to produce good results on most dives.

Suggested Routes[edit]

No particular routes recommended, the main section of the reef is small enough to explore on a single dive, and there is only one significant pinnacle.

Stay safe[edit]

See also: Diving the Cape Peninsula and False Bay#Stay safe

Hazards[edit]

No site-specific hazards known.

Skills[edit]

No special skills required.

Equipment[edit]

See also: Diving the Cape Peninsula and False Bay#Equipment

No special equipment required. A DSMB is recommended if you are likely to surface away from the shotline, and nitrox will probably allow a longer dive.

Nearby[edit]

Dome Rock reef and nearby dive sites

Back to the list of dive sites in the Roman Rock area

Other regional dive sites:

This dive guide to Dome Rock is a usable article. It has information on location and equipment as well as some complete entries on what to see. An adventurous person could use this article, but please feel free to improve it by editing the page.