For the warm season, pack a 5mm full suit as a practical starting point for scuba, with hood or vest according to personal cold tolerance and operator advice. Cold-season visitors may prefer a 7mm system or drysuit only if trained and supported by the center. Add mask, computer, surface marker buoy, spool, booties, compact torch, certification cards, logbook, and any requested medical form. For snorkeling and topside days, bring water shoes, rash protection, hat, refillable bottle, grippy walking shoes, and a light wind or rain layer. Use padded carry-on protection for regulators, cameras, and permitted lithium batteries.