Safety is number one when diving or snorkelling. Take a buddy with you and any necessary safety equipment, such as a dive computer, knife, and flashlight. A SMB or DSMB and reel can also come in handy. If you’re scuba diving, it’s a good idea to have completed a certification and basic safety or rescue training too. Make sure your equipment has been safety tested by a professional. Always tell someone your plans and location for the day, and when you should be expected home.