The Colonia-based Yap Divers operation advertises scuba rental gear, weights, tanks, Nitrox, rinse/storage facilities and camera work areas; confirm sizes, computer availability, certification requirements and Nitrox extras directly before arrival. Bring specialty or prescription equipment, spare mask straps, exposure protection, a computer and appropriate personal medication, since remote-island replacement choice is limited. Snorkeling guiding and some rental gear are advertised, but freediving instructor staffing, competition lines, depth buoys and rescue-trained line safety were not independently verified. Ask the boat operator about emergency oxygen, radio coverage, surface flotation and the specific evacuation protocol before paying. Yap Divers, frequently asked questions Yap Divers, scuba training Yap Divers, freediving Divers Alert Network, preparedness guidance