Oscar-nominated actor James Cromwell has been arrested at SeaWorld in San Diego.
The veteran actor and vegan was protesting against SeaWorld's treatment of orca whales when he was put into handcuffs and taken into custody - along with his fellow protesters.
Cromwell took to the stage during a show called 'Orca Encounter' to talk about how animals have been mistreated and died at the amusement park.
Vegan charity PETA live streamed the video. The footage shows Cromwell armed with a megaphone and wearing a shirt that says 'SeaWorld Sucks'.
In a statement about the protest, Cromwell said: "Orcas deserve a full life in the ocean, not a life sentence of swimming endless circles until they drop dead from disease.
"My friends at PETA and I want SeaWorld to move these intelligent animals to seaside sanctuaries without delay."
A whale died yesterday at SeaWorld - reportedly from pneumonia. Kyara was just three months old.
PETA released the following statement in response.
"SeaWorld executives have dollar signs where their eyes should be, but even they can’t ignore that three month old Kyara died on #BoycottSeaWorldDay while Academy Award nominee James Cromwell was preparing to lead PETA supporters in a takeover of SeaWorld’s orca show.
"Forty orcas have now died on SeaWorld’s watch - it’s time for the 'abusement' park to move the remaining animals to seaside sanctuaries before the death toll hits 41."