Joshua Swash is a north-side Utila drift reef with a plateau, gorges and sand channels that cut across coral rocks. The route suits divers who can follow a moving plan, hold tidy buoyancy and stay with the team while the profile changes from shallow reef top to cut-through sections and wider sandy runs. It is better treated as a guided drift than a linger-and-hover site, with timing and route awareness more important than a static reef stop.