Ramanibai R. 2011. “New Report on Hydra Viridissima Pallas, 1766 (Cnidaria, Hydrozoa, Hydridae) from Chingleput Lake, Tamil Nadu- India”. Journal of Research in Biology 1 (4), 276-78. https://ojs.jresearchbiology.com/index.php/jrb/article/view/93.