60 



UNDERWATER GUIDE TO MARINE LIFE 



Fig. ]5. Some diving gear for snorkeling and self-contained diving. Snorkel tubes, 

 mask, emergency air pack, and flippers are in the foreground. Aqtia-lungs and air 

 coinpressor for filling tanks are shown in the rear. 



DIVING GEAR 



Basic Equipment 



The basic equipment necessary to start underwater exploring includes swim 

 fins, mask, and snorkel. The mask or goggles is a must, for the eyes see every- 

 thing out of focus without it. One must constantly keep in mind that the mask 

 makes objects appear one third larger or distances one fourth smaller. The 

 mask should fit comfortably, allow maximum vision, and not leak water. The 

 flippers, or swim fins, will greatly increase swimming ability and speed as well as 

 free the hands for photography and safety. They wall also give better balance 

 and maneuverability. The fins should feel comfortable— if too tight they will 



