Bear Grylls' reality TV show The Island has sparked controversy after its male contestants accidentally killed and ate a rare species of crocodile.
The British series is up to season two and sees adventurer Grylls drop groups of men and women on desert islands in the Pacific to test their survival skills and endurance.
But in scenes set to air in the UK overnight, the hungry participants' error in making an American crocodile their dinner has forced bosses to apologise.
The large reptile is protected under the Endangered Species Act, meaning it is forbidden from being killed, poached or harassed in any way.
"This was a genuine and regrettable error," a Channel 4 spokesperson said.