[6] In 1989, Harcourt, Brace and Jovanovich (heavy in debt and fighting a hostile takeover) sold its SeaWorld and Boardwalk and Baseball theme parks to Anheuser-Busch, Inc.[7] Plans to build a second Boardwalk and Baseball park adjacent to Sea World San Antonio were abandoned.

SeaWorld San Antonio has one of the most prolific beluga breeding programs in any zoological facility in the United States.

This park has also been selected the permanent home of a rescued Cook Inlet beluga named Tyonek who was deemed unreleasable due to his young age and lack of survival skills.

Discovery Point is where most of the park's dolphins live (11 of them), where they do interaction programs and are also on display via above water and underwater viewing areas.

Zoological Support is a backstage area where five other dolphins live and where other animals could go for breeding purposes, specialized veterinary care, etc.

SeaWorld San Antonio is one of two zoological facilities in the United States that cares for Pacific white-sided dolphins.

The newest animal exhibit in the park which opened in May 2019 featuring rescued loggerhead and green sea turtles that live with schools of marine fish.

It also has a natural biofiltration system consisting of an adjacent salt marsh with bacteria in the plant roots that feed on animal waste.