Rozaimi Jamaludin, Mohamad, Japar Sidik Bujang, Misri Kusnan, and Hishammuddin Omar. 2005. “Shading Responses of the Seagrass, Halophila Ovalis: A Preliminary Comparison Between Cultures and Naturally Growing Plants”. Malaysian Journal of Science 24 (1):23-29. https://juku.um.edu.my/index.php/MJS/article/view/8928.