Members of the animal rights group sent out a press release Monday that said "SeaWorld parkgoers will soon receive a message from above, courtesy of PETA."
A small plane carrying a large banner that reads "SeaWorld: Let Whales and Dolphins Out of Prison," will fly over the park Tuesday, according to PETA.
The group said SeaWorld should transfer all dolphins and whales to coastal sanctuaries.
"PETA is concerned that animals at SeaWorld remain frustrated and enraged by their cruel confinement and their inability to hunt, swim, and live in the oceans with natural family pods," reads the release.
The protest comes after the recent death of a trainer at the theme park.
Dawn Brancheau died in an attack by a killer whale at the park on Feb. 25.
SeaWorld resumed all shows involving animals, three days after the attack, without trainers in the water.
The Orange County Sheriff's office recently released witness statements from the attack.