Zonation of intertidal organisms on the rocky shores of Bombay

Zonation of intertidal organisms on the rocky shores of Cuffe Parade, Chowpathy, Breach Candy and Mahim around Bombay was studied. In all the four shores it was possible to recognise the following general pattern of zonation. (i) Upper littoral zone dominated by httorinids-four littorinid species were abundant in all the four localities. Major species showed definite vertical zonation. (ii) Mid littoral zone characterised by barnacles and oysters, was divisible into three or four belts-dominated by distinct set of animals. (iii) Lower littoral zone (wide zone), had a large number of species and maximum number of animals-trochids in general dominated this zone.