Reefs
Reef from the Norse word "rif" used for arcuate breaking water
Reef:
1. topographic relief from the sea floor
2. wave resistant
Types:
1. inorganic
2. organic or ecological
Environmental zonations (Fig. 13.15, p. 480; and Tab. 13.2,
p. 481)
a. back reef and lagoons
b. reef flat
c. reef crest
d. reef front
e. fore reef
Changes in reef systems through geological time