Islands in the Gulf of Mannar are sedimentary landforms developed during the low strand of
sealevel during the last interglacial period. The reefs commenced to grow along with the
pace of rising sea level. Islands such as Van, Koswari, Kariashuli, Viangushuli inTuticorn
region can be called as Tuticorin group of islands. The size, shape and orientation of the
reef along with the wave parameters are crucial in determining the development and
instability of the islands. Oval or elliptical shape of the reef, small reef area and orientation …

Islands in the Gulf of Mannar are sedimentary landforms developed during the low strand of
sealevel during the last interglacial period. The reefs commenced growth along with the
pace of rising sea level. The size, shape and orientation of the reef along with the wave
parameters are crucial in determining the development and instability of the islands. Sea
level rise and mining of reef materials are also causative factors.