0900hs ~75 fish on shelf. Most adults. Many gathering at "grey" areas which have only a very little algae at them (slight tinge of dr.green). Significant # of juveniles also present. Feeding + milling activity. Cage - large mat of algae still in cage although very dark green (4 rocks - no algae) Small mats (3x5") of dr. algae also scattered on eastern side of shelf. 0900 hs. - Seem to be more fish on the upper shelf now than 0850-0855. (Fewer at 0850 because of frightening?) Now can easily count 50 - then could only count 25-30. Probably 75-100 fish on shelf now. Snail. Collection - Two large (long handled) dip nets - one y large & one y small mesh fish can swim through - sample smaller than would have been if small mesh not available. Fish school when frightened. They are easily frightened by any movement at all - are scared down to depths (over ledge) of 6+ ft. & do not readily come back up.