“After slicing open some of the crocodile corpses last year, researchers determined some kind of pansteatitis — an inflammation of adipose tissue — was killing the animals. Specifically, their tails were swollen with the hardened, enlarged fat deposits, which had stiffened and immobilized the crocodiles and left them unable to hunt. Samples of the fat showed the deposits had oxidized to bright yellow.”

It’s called Yellow Fat Disease, and there’s no mystery about it.

It’s caused by omega-3 fatty acids flowing downriver from fish slaughterhouses.

http://www.scientificamerican.com/article/what-is-killing-crocs/