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PACIFIC SCIENCE, VoL XIX, April 1965 
Fig. 5. Large colonies of A. grandis must be tied to the anchor line and later hauled to the surface. 
bringing it to the surface, and then taking it 
back to the original site where it was re- 
anchored to the bottom. 
Table 2 summarizes the results of all trans- 
planted branches, including those tied to a 
buoyed line (transplants 11, 12, 13, and 14). The 
surge at each station is also included. 
The viability of transplanted colonies was de- 
termined by observing the polyp condition. Con- 
tracted tentacles indicated a less than ideal en- 
vironment, while mucus formation or denuded 
portions of the coenosarc indicated that the ani- 
mal was dying. 
The data compiled in Table 2 show that trans- 
planted colonies (numbers 1-7) are able to sur- 
vive in the calm waters of Kaneohe Bay, Oahu, 
in quite shallow water for long periods of time. 
Here the light penetration is very strong, and 
on clear days approaches 60% of the surface 
light. Branches transplanted in 12 to 18 meters 
of water, 50 yards off the wave-beaten head- 
land of Moku Manu, did not fare as well, even 
though the light penetration (40% of the sur- 
face light) was less than that in Kaneohe Bay. 
The lack of marked variation in other chemical 
and physical factors suggests that surge was the 
prime factor influencing the survival of these 
transplanted branches. 
The manner in which the animal died also 
implicates surge and, to a lesser degree, light 
intensity. Transplants 1, 2, 3, 4, 11, 16, and 18 
all illustrate this phenomenon. After approxi- 
mately one week the coenosarc covering the 
skeleton of these branches was completely intact, 
except for a narrow band along the upper sur- 
faces where it was entirely removed. The animal 
tissues that cover the upper portions of the black 
skeleton were exposed to turbulent down-eddies 
accompanying heavy seas. At the same time, the 
light intensity was strongest upon these surfaces. 
Hence, an interaction of surge and light intensity 
acting as limiting factors may be quite possible. 
