• Arun G
• R. Rajaram

The study has been conducted for the collection of hydrozoa species in Gulf of Mannar coast, Tamil Nadu, Southeastern India and investigate their occurrence in related to coral reef health assessment. During the study period of February 2017,the Macrorhynchia philippina species associated on the dead /degraded reef flats and absence in the healthy reef. The increased occurrence of M. Philippina colonies were observed based on the substratum availability of dead coral reef. The study has reviled, the M.Phiippina preferably grow on the dead reef part and the increased occurrence act as the indicator species for the reef health assessment.

Hydrozoa, Macrorhynciha philippina, Coral associate, Reef health

"Hydrozoa (Macrorhynchia philippina) a Health Indicator of Coral Reef", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 2, page no.182-187, February-2019, Available :http://www.jetir.org/papers/JETIR1902129.pdf

"Hydrozoa (Macrorhynchia philippina) a Health Indicator of Coral Reef", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 2, page no. pp182-187, February-2019, Available at : http://www.jetir.org/papers/JETIR1902129.pdf