It's the Island episode! Rustin starts us off with an overview of barrier islands and the important roles they play in habitats, breeding grounds, and protection of coastlines (and why they are not the best place for real estate). Following this, Aaron broadens the definition of islands and presents the Devil's Hole, a geological wonder over a thousand feet deep in the middle of the desert, and the critically endangered fish that reside inside it.

P.S. Always keep an eye out for the elusive banana pepper rings