Notes on the Gracious Sea Urchin Tripneustes gratilla (Echinodermata Echinoidea) in Pag-asa Island, Kalayaan, Palawan, Philippines

The Gracious Sea Urchin Tripneustes gratilla is one of the most heavily exploited sear urchins in the Philippines. However, knowledge about its status in Palawan especially in Pag-asa Island, Kalayaan is wanting. The study was conducted to determine the size structure, population density and test di...

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