Two dolphins in Switzerland died after being fed synthetic heroin by ravers. That whole sentence, sadly, is true.

The incident happened last November at the Connyland Aquarium in Lipperswil, Switzerland yet is only being brought to light now after the synthetic heroin was found to have been a factor in both dolphins’ deaths.

Activists were apparently on hand to protest the rave being held at an aquarium, which they say was cruelty to animals. The Connyland Aquarium said that the tanks were built strong enough to not harm the animals with the loud music. It was, however, synthetic heroin that killed the dolphins, not the sound. The synthetic drug apparently shut off the part of the brain in the dolphin that tells it when to surface for air.

It’s a sad story. Who would let such perfectly good heroin go to waste? kill two dolphins with heroin?