You can go and visit the wildlife sanctuary across the Gulfo Dulce. There is boats that go almost daily in the high season, and can drop you right off at the sanctuary. The sanctuary rescues and rehabilitates wildlife, and with a $25 entrance fee you support the wildlife sanctuary’s operations.
The boat tour that goes to the sanctuary usually also includes Dolphin and whale watching, so you can do both things in one day! The boat tour starts from $75 per person.