The equipment needed to do scuba diving are:- Rail, blade, fin, foot pocket, boot, wet suit, diving glove, death gauge, compres-air cylinder, emergency regulator, buoyancy compensator, air hose, regulator first stage, harmless, hood, mask, shorkel, regulator secong stage, inflator valve, purge vulvae, maunthplese, weight belt, information consol, thermometer, pressure gauge, depth gauge.
If you don't have these equipment you may be in danger, but even if you have these equipment you can be in danger.
like in these web site:
http://www.myfishtank.net/wordpress/wp-content/uploads/scuba-shark.jpg
These are some pages were you may see the equipment:
http://visual.merriam-webster.com/images/sports-games/aquatic-nautical-sports/scuba-diving/scuba-diver.jpg
http://wb3.indo-work.com/pdimage/41/130341_scubadivingequipment.jpg
