cutting dolphin upLIMA (PERU)- For over ten years scientists and environmentalists have been warning of a practice going on among shark fishers in Peru: they use dolphins as bait. The past decade saw a mass slaughter of these mammals in Peruvian waters.

Hundreds of fishing boats have been accused of killing the animals and using their fatty bodies as bait to catch sharks.

The killings, as many as two or three per hunt, by hundreds of fishing boats around the country, add up each year to make it the biggest illegal slaughter of dolphins in the world, according to environmentalists.

ITV News has obtained footage that shows fishermen harpooning dolphins for bait. It’s the first time this secret hunting has been filmed.

Read more and see the video at ITV News.