The North American Animal Liberation Press Office attributes the dolphin release to a group called Undersea Railroad, and says the first ALF action was, in fact, a raid on the New York University Medical Center on March 14, 1979, when activists removed one cat, two dogs, and two guinea pigs.
北美动物解放新闻办公室把释放海豚归到名为海底地下铁路（Undersea Railroad）的团体上，并表示，首次ALF行动事实上是1979年3月14日对纽约大学医学中心（Medical Center）的一次袭击，那时候行动者放走了一只猫、两只狗和两只豚鼠。