Animals that are too big
A while back I posted the above photo of a eurypterid. It is, thank goodness, fake; it has to be, since the eurypterids became extinct before the beginning of the age of dinosaurs (the biggest species were much larger than what this picture shows -- they were the biggest arthropods that have ever lived). In the course of roaming the internet, though, I've run across plenty of other pictures of animals bigger than they have any decent right to be -- and as far as I can tell, these are all real.
Yes, that's a jellyfish.
One of those Russian snails featured on Murrmurrs, perhaps?
What's going on here? Genetic engineering by mad scientists? Wormhole from the Land of the Giants? Something to do with Chernobyl?
Check out the look on that cat's face. I know just how he feels.