When exploring the underwater world, you need to have the right gear and be able to move around with ease. Be it snorkelling or diving, exploring the underwater world means you need to go shopping for equipment, though many hotels and resorts generally also give you the option to rent equipment too. A mask and some fins are good enough to snorkel above the reefs, but diving is one step higher and as such you will need far more equipment when delving into the deep blue. In general diving gear includes a mask, a fin, a dive computer for decompression unit calculation, a wet or a dry suit to ensure your temperature is maintained underwater, weights, tanks and accessories. You need to do your homework to decide what you will precisely need for your particular excursion. Hiring diving equipment is generally a good idea when travelling overseas.