Fig. 10. At 55 meters off Molokini, a 2-meter colony growing on the edge of a jutting ridge of basalt. 
Notice the barren ledge in the background, which is not supporting a single colony of A. grandis. 
ment inhibits coral growth, in heavy currents 
there is too much abrasion by small fragments 
of coral and rock; coral planulae do not settle 
or remain attached where currents are strong, 
hence moderate currents promote most vigorous 
growth.” 
Tide tables (U. S. Coast and Geodetic Survey, 
1 96 1 ) indicate that mixed tides predominate in 
