Sponge-generated bioerosion in Lakshadweep

Abstract

The part played by sponges in the destruction of gregarious molluscan beds and coral reefs has been well documented in the past, and as understood at present, the sponges constitute a major group among 12 different taxa of marine plants and animals that cause considerable damage in the marine environment. Calcibiocavitological investigations made in the past indicate that various borers resort to various methods in gaining entry into the hard calcareous substrate. In some it may be by chemical means and in others, by mechanical means. In yet others it is affected by a combination of both the above means. The present article gives an account of the author's findings on sponge generated bioerosion in the coral islands of Lakshadweep.