Killer whale Tilikum appears during a performance in the show "Believe" at SeaWorld on March 30, 2011 in Orlando, Florida.

SeaWorld's earning miss on Thursday isn't the only setback that the company has faced in recent years and doesn't look to be the last.

Adam Schiff, a congressman from California, and assemblyman Richard Bloom of the city of Santa Monica, proposed a legislation on Friday that would prohibit breeding of captive orcas and prevent wild capture for the purposes of public display.

The Orca Responsibility and Care Advancement Act (ORCA) is supported by the Animal Welfare Institute, the Humane Society of the United States, the Humane Society Legislative Fund and People for the Ethical Treatment of Animal.

The act would ultimately phase out captive orcas from locations like SeaWorld in the United States within 50 years.