reef wall

reef wall

[′rēf ‚wȯl]
(geology)
A wall-like upgrowth of living coral and the skeletal remains of dead coral and other reef-building organisms, which reaches an intertidal level and acts as a partial barrier between adjacent environments.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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Our drift dive along the reef wall was just for fun, a break from our long days and evenings in the Eilat marine laboratory.
Our kids loved the pool, with its reef wall, and they burned off some more energy before bedtime at Carville Hall Park, a five-minute walk away.
Diving here starts with a sandy slope that descends from the shore with the reef wall starting on both sides, the place is really wild and mystic, as it is full of beautiful reefs.
Diving here is starts with a sandy slope that descends from the shore with the reef wall starting on both sides in a way that supports the presence of a lot of pinnacles, dramatic rock formations and a various marine life.
Other spots that can be explored are the San Miguel coral garden, Cagpating reef wall and Guinlatayan peak bird sanctuary.
Within each site, eight non-overlapping 50m belt transects were laid out randomly (separated by >10m) on the reef flat parallel to the reef wall (following the depth contour=4-9m).
A mile off the eastern shore of the atoll, where the reef wall rapidly drops to a spectacular 2,600 feet to the ocean floor below, is the perfect spot for certified divers to explore the giant corals, sponges and countless other species that make the reef their home
It is a huge coral lagoon which starts near the surface and drops down to a stunning arch leading out to the main reef wall. At its deepest part, the Blue Hole is more than 120m and should be attempted only by the most experienced divers.
On this dive we swam at the top of a reef wall, where the reef drops down to the sea floor proper - 6000ft.
"We have been involved with the cleanup for some years but this year we put Blue Energy into practice for the first time in this very worthy local initiative." Over 100 divers assembled for the formal opening and shortly after plumbed the depths of the 40-meter-deep drop down a reef wall along the edge of the Corniche.
Material studied: Salvador City, Farol da Barra, on rock outcrop, 18 m depth, 1.iii.1993, four colonies, 4 mm high, without gonophores [N 1836]; Northern Coast, Arembepe Beach, on external beach rock bank, 6-8 m depth, 15.xi.1995, eighteen colonies, up to 4 mm high, gonophores observed [N 1837]; Arembepe region, on coral-algal buildup, 37 m depth, 18.vi.1992, eleven colonies, 3-4 mm high, without gonophores [N 1838]; Guarajuba Beach, on coastal emergent reef wall, 6-8 m depth, 23.iv.1997, five colonies, 4 mm high, without gonophores [N 1839]; Praia do Forte Beach, on coastal emergent reef wall, 5-6 m depth, 25.iv.1997, twenty colonies, 3-4 mm high, without gonophores [N 1840].
Apart from coral reefs, Shepherd said the region is a "complex of many different ecosystems," where there are "seagrass beds, muck habitats, sandy areas, reef walls, rubble zones, among others, all in close proximity to each other."