Difference between revisions of "Atolls"
From coraldigest
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= Atolls = | = 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.<ref | 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. </ref> | ||
==Characteristics and Corals== | ==Characteristics and Corals== | ||
Revision as of 02:22, 24 January 2013
Atolls
Atolls are circular reefs formed around volcanoes. After the volcano has submerged, a ring of coral 1-20 miles in diameter is left. [1]
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]