Note
Temporal variation in the number of larvae released, number of planktonic larvae, and settlement density was examined for the colonial ascidian Didemnum candidum Savigny, 1816 in Pearl Harbor, Hawaii, USA. The influence of larval availability on settlement intensity was estimated by counting larvae released from adults placed in traps and by sampling larvae in the plankton with a plankton pump. Diel timing of larval settlement was measured by counting newly-settled juveniles on acrylic plates immersed for consecutive 1 or 2 h periods throughout the day.