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Kids call for SeaWorld killer whale ban

11 April 2014 Last updated at 06:45 BST

A group of school girls have been involved in a campaign to stop killer whales being used in performances at their local SeaWorld in San Diego, in America.

More than 1 million people have signed a petition backing a ban on using killer whales in entertainment shows at the SeaWorld park.

People that work with the mammals say they help with vital research.

Law makers in California have delayed a decision on any ban until they know the full impact of keeping whales in captivity.

Watch Ayshah's report for more information.