Sea turtles are occasionally seen near sea-grass meadows around coral reefs in the Reserve. Jobos Bay, Puerto Rico 501.
Black mangrove adapts to high salinity conditions prevalent in some areas of the estuary.
Jobos Bay, Puerto Rico 502. Jobos Bay National Estuarine Research Reserve. The white mangrove is another important component of the mangrove forest in a tropical estuary. Jobos Bay, Puerto Rico 503. The swamp fern, frequently found through the Reserve, is an indicator of environments that are rich in nutrients.