It's called the “Cage of Death.”
The “cage” is actually a plastic tube that gives thrill seekers a chance to swim face-to-face with crocodiles.
A single dive costs about $126, or $190 for two divers.
The dives are during feeding times, meaning you're likely to see more than one and they're going to be hungry. The attraction is located at Crocosaurus Cove Darwin, an aquarium that houses more than 200 crocs—some of which are more than 16 feet long.
If there was ever a time to opt for the photos almost every attraction tries to pawn off on visitors, this is it.