New record of marine tube dwelling diatoms Navicula mollis and Navicula rusticensis from South Andaman, India.

The occurrence of two species of marine tube dwelling diatoms was reported from the water samples collected from Phoenix Bay, South Andaman. The recorded species were Navicula mollis and Navicula rusticensis. The morphometric dimensions of these two species were also given. Along with the tube dwelling diatoms, co-habitant diatoms were also observed in the present study. This was the first report of tube dwelling diatoms from Indian waters particularly from Andaman Islands. [ABSTRACT FROM AUTHOR]