Atolls
From coraldigest
Atolls
Atolls are circular reefs formed around volcanoes. After the volcano has submerged, a ring of coral 1-20 miles in diameter is left. <ref name="palaces"> Strykowski, Joe and Rena M. Bonem. Palaces Under the Sea. Crystal River, FL: Star Thrower Foundation, 1993, p. 28-9. Print.Cite error: The opening <ref> tag is malformed or has a bad name
Characteristics and Corals
There are two sides to an atoll. The outer edge facing the ocean slopes steeply to the ocean floor. Here, calcareous algaes flourish. The seaward margin faces into the center of the circle and drops much more gently. Here, you may find coral spurs or sediment-filled canyons.[1]
References
- ↑ Cite error: Invalid
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