Entomologist and wildlife photographer Piotr Naskrecki is not squeamish. He recently allowed two human bot fly larvae to grow to maturity under his skin and documented the process in a short film.

Get a compelling long read and must-have lifestyle tips in your inbox every Sunday morning — great with coffee! Piotr Naskrecki isn’t kidding: once you see the time-lapse video he posted online of a ...