Mystery Pavillion is a short story included at the end of Black Paradox.
In the future of 2105, people are queuing to see a genetic recreation of a pelican, which has long since been extinct. They are told that pelicans were once used to catch fish. However, the "pelican" in question is an enormous, mutated abomination which promptly demonstrates its fish-catching technique by swallowing two spectators whole. The staff member on-duty orders it to spit them back out, and it does so, but they begin to melt alive as they reach the ground. The spectators look on in horror as the narration notes that "the darkness of the world will continue for a while yet."