The density of giant clam, Hippopus hippopus, reduced from 10 individuals per dive during 1994 to only 2 individuals spotted in 14 dives in present study.

• 其中菱砗渠蛤的数量比1994年减少许多，其密度从一次潜水可记录到10只，减少至本研究14次潜水调查共记录到2只。