MIAMI (AP) — The last orca has been born in captivity at a SeaWorld park in San Antonio, Texas, just over a year after the theme park decided to stop breeding orcas following animal rights protests and declining ticket sales. Preparing late last month for the moment, SeaWorld's chief zoological officer, Chris Dold, told The Associated Press he expected the birth to be bittersweet, because it would be the last such event at any of the parks. SeaWorld decided to stop breeding orcas, and phase out its world-famous killer whale performances by 2019, after public opinion turned against keeping orcas, dolphins and other animals in captivity for entertainment. The calf will be visible to visitors either in the orca stadium pool at the San Antonio park or in two adjacent pools. Researchers have said they worry that SeaWorld's decision to stop breeding orcas will slowly reduce their ability to study orca health, growth and behavior, limiting them in coming years to collecting data from a small pod of aging whales. Heather Hill, a St.