2011 – SeaWorld

In the first case of its kind, PETA, three marine-mammal experts, and two former orca trainers file a lawsuit asking a federal court to declare that five wild-caught orcas forced to perform at SeaWorld are being held as slaves in violation of the 13th Amendment to the U.S. Constitution. The filing—the first ever seeking to apply the 13th Amendment to nonhuman animals—names the five orcas as plaintiffs and seeks their release into their natural habitats or seaside sanctuaries.