The Ocean Adventure is a marine park located at Camayan Wharf, West Alanin Forest Area, Subic Bay Freeport Zone (incidentally, Subic is a former U.S. military base in the Philippines). It has dolphins, whales and sea lions in their natural habitat.
There are a number of scheduled shows, including the sea lion show (photo below) and the dolphin show that we were able to catch just in time.
I realized that while there are a number of shows scheduled for the day, it would have been better for us to know the schedule beforehand, so we could have decided which one to see first and arrive on time. The plan would have been to go to the aquarium, see the different kinds of fish (like the one above), grab a bite at the restaurant inside, then buy some souvenirs at the store — while waiting for the next show, like this dolphin show:
You could read about how to get there, the main attraction, special programs, admission prices and other information at the Ocean Adventure website.