DUN DUN DUN!
I've spent the past fortnight setting up and conducting my crocodile and fish decay experiment. It was a mad rush of buying plastic tubs and glass tanks, filling them with sand and water, buying 9 bream from a fishmonger (who I'm sure would have been disappointed to hear that I didn't plan to eat them!), collecting the humanely euthanased crocs, photographing, measuring, and weighing the crocs and fish, and finally placing them in their respective tanks. I buried some of the crocs and fish immediately, leaving the others to 'float and bloat'. Then I will bury half of those who sink after floating, and leave the other half alone.
But just like a bad zombie horror novel, someone had risen from their grave. They're still dead, so I guess the zombie part isn't exactly true, but they're doing exactly what they shouldn't be doing! Alas, it was one of the buried crocodiles, bloated and floating up through a 20 cm layer of sand.