Sirinat National Park also hosts a small area (1 square kilometre) of mangrove forest, located where freshwater and seawater mix in estuarine areas. Tree species here include red mangrove, white mangrove, black mangrove, cannonball mangrove, looking-glass mangrove and "Ceriops". Other plant species include "Rhizophora apiculata" and "Derris trifoliata". Mangrove forest birds include collared kingfisher, Terek sandpiper, bar-tailed godwit, white-breasted waterhen, slaty-breasted rail, white-bellied sea eagle, brahminy kite and large-billed crow. The mangrove forest hosts some reptiles such as monitor lizard, mangrove snake and turtle. Mangrove marine life includes shrimp, mudskipper, mullet, grouper and garfish. Coral reefs are located in the marine section of the park at a distance of to offshore. Reef species include plate coral, soft coral, sea fan and sea anemone. Formerly, leatherback sea turtles laid eggs on a stretch of beach in Sirinat National Park. At the park, 166 eggs were laid between 1999–2013, but the survival rate was small given the intensive property development along the beach. Since 2013 no further eggs have been observed there. Thailand was once a sanctuary for leatherback turtles.