The Port of San Juan, on the islet at the bay's northern side, is among the busiest Caribbean ports.
Thousands of fishermen ply the brackish waters where fresh water meets the sea.
San Juan Bay's beauty and ecological diversity attracts tourism and a variety of recreational activities.

A result of exploitation, however, has been the degradation of a significant portion of the bay's natural resources; the area is also susceptible to seismic activity.
A restoration project has returned the bay's water to "safe at contact" status and has integrated the city's renovated coastal infrastructure into the bay's shoreline.
The Port of San Juan, on the islet at the bay's northern side, is among the busiest Caribbean ports. Thousands of fishermen ply the brackish waters where fresh water meets the sea. San Juan Bay's beauty and ecological diversity attracts tourism and a variety of recreational activities.
A result of exploitation, however, has been the degradation of a significant portion of the bay's natural resources; the area is also susceptible to seismic activity. A restoration project has returned the bay's water to "safe at contact" status and has integrated the city's renovated coastal infrastructure into the bay's shoreline.
San Juan Bay