For snorkel tours, bring a towel and on all tours we will recommend rub in reef safe sunscreen if wishing to reapply on the vessel. Spray reef safe sunscreen may be applied prior to boarding and not again till returned to shore.
This will vary depending on the tour and location that you depart from. In general, for snorkel tours, wear swimwear / cover up and for non-snorkel tours, wear comfortable clothing. On all tours, wear easy to remove footwear for the barefoot vessels.