Animal rights group, People for the Ethical Treatment of Animals (PETA), will display a wall poster asking travelers to maintain distance from SeaWorld at San Diego's Lindbergh Field on Thursday. Activists have won a case to allow them to display an anti-SeaWorld ad to passengers arriving at the San Diego International airport. The announcement was made through an article in UT San Diego. San Diego, San Antonio and Orlando are locations for the marine animal theme park.

PETA has been raising concerns for years to stop the use of captive killer whales, or orcas, in shows organized at Sea World. A bill has been recently introduced by a California state assemblyman, imposing a ban on the use of orcas in shows and breeding them in captivity. Assemblyman Richard Bloom said he started to think seriously about the issue after he saw the movie 'Blackfish' in which an orca is killed by a trainer at Sea World Orlando.

PETA and the American Civil Liberties Union arraigned San Diego County Regional Airport Authority on charges of not allowing use of ads as an advice to tourists to stay away from SeaWorld.

A joint statement by ACLU and PETA clearly said that the agency has no right to refuse to run the ad as it welcomes ads from other non-profits and from SeaWorld.

"Nothing is more fundamental to the First Amendment than the principle that government may not silence speech because of its viewpoint. We are glad this case resulted in the vindication of PETA's free-speech right to reach San Diego visitors on the same terms as any other advertiser", said David Loy, legal director at the ACLU of San Diego & Imperial Counties, in a statement.

SeaWorld San Diego said in a statement that PETA believes in taking extreme steps and it has once again showed that its actions are only intended for publicity stunts rather than helping animals. The statement added that animals at SeaWorld are healthy and happy.