- Dive certification (e.g., PADI, SSI) - Appropriate wetsuit or drysuit - Dive mask and snorkel - Fins - Buoyancy control device (BCD) - Regulator and tank - Weights (if necessary) - Dive computer or depth gauge - Safety equipment (e.g., surface marker buoy, whistle) - First aid kit - Dive buddy or group - Knowledge of dive site and conditions - Emergency plan and communication device