Sudara,-S.; Udomkit,-A.; Manthachitra,-V. Demersal zooplankton associated with coral heads at Sichang Islands, Thailand. GALAXEA. 1986. vol. 5, no. 1, pp. 195-202. A meroplankton trap, slightly modified, was used ot collect zooplankton from coral heads at the Sichang Islands, Gulf of Thailand. No significant differences were found in species composition of plankton collected during day or night, but more plankton occurred at night. Different coral growth forms did not significantly differ in the number of associated plankton. Less plankton were associated with coral heads in protected areas.