People for the Ethical Treatment of Animals (PETA) on Thursday formally asked the California Coastal Commission to reject SeaWorld San Diego's proposal to expand its killer whale tanks. The animal rights organization said the commission has the authority and duty to consider the orcas' welfare.

The animal rights organization kept forward its statement in a letter of opposition filed with the coastal panel.

It has been said that SeaWorld's $100 million project has to first muster with Coastal Commissioners, regarding its location in the coastal zone. The commission during its review will consider the factors such as potential impacts on coastal resources, such as water quality and noise.

Over the past few months, SeaWorld has been writing letters of support via emails sent to its fan base in anticipation of a possible hearing in August when the commission will be meeting in San Diego.

Coastal planners have decided to postpone the matter until possibly October when the commission will be meeting in Long Beach.

Coastal planner Alex Llerandi said, "This item has been postponed because of all the information submitted. The coastal staff is taking the time to ensure all potential issues and viewpoints are considered in any final recommendations".

As per sources, the SeaWorld project will expand the water volume of the killer whale tanks to 10 million gallons, as part of a 1.5-acre new attraction showcasing its orca population.

SeaWorld San Diego has argued its new, enlarged orca habitat will not only educate its guests about killer whales but will also inspire conservation efforts to protect animals in the wild.