How to choose professional equipment for snorkeling?

Face mirror: Unlike the waterproof mirror for swimming, the diving face mirror has a nasal sac to balance the pressure and prevent water from entering the nasal cavity.

Breathing tube: it allows people to breathe without lifting their heads off the water when snorkeling. In scuba diving activities, divers usually use breathing tubes for surface operations (such as observing underwater environment).

Frog shoes: provide underwater driving force. Different from swimming, scuba diving only relies on leg movements to achieve movement, while hands are usually used for other things (such as underwater photography and manipulating other equipment and instruments). ).

Diving suit: Even if you dive in the hottest days in the tropics, you'd better wear a suitable diving suit, because the temperature in deep water is relatively low and diving activities are not as intense as swimming under normal circumstances. Cold may lead to fatigue, unresponsiveness, muscle spasm and other symptoms. So it is absolutely necessary to have a suit that fits and has the right thickness.

Buoyancy regulator (BC): It is a device for controlling buoyancy. Divers can easily float on the water surface when they are on the water surface, and can achieve the best buoyancy (neutral buoyancy) by fine-tuning the air in BC when they are underwater.

Gas cylinder: usually filled with high-pressure air or mixed gas for divers to breathe underwater. Gas cylinders need to be sent to professional institutions for inspection regularly. For ordinary diving enthusiasts, they seldom buy their own gas cylinders, and usually just rent them from diving shops.

Air pressure regulator: people can't directly inhale the high-pressure gas in the gas cylinder, so they need to adjust the pressure through the air pressure regulator. The regulator consists of a main pressure head and an auxiliary pressure head. The primary head is used to connect BC, and the secondary head is used to breathe. Many divers are equipped with spare auxiliary heads.

Diving instruments: The necessary diving instruments include pressure gauge, depth gauge, compass and diving chronograph.

Weight and load-bearing belt: Load is to balance the buoyancy generated by divers themselves, diving suits and various diving equipment. Usually, the weight is made of lead and tied to the diver's waist with a weighted belt. In some emergency situations, divers can quickly untie the load belt and give up the load. What needs to be emphasized here is that it is dangerous to float to the surface quickly in deep water.

Auxiliary diving equipment

Diving computer: it can record all kinds of data of diving activities, and can directly remind divers of important parameters such as decompression time.

Diving knife: it has many uses, mainly to prevent divers from being entangled in fishing lines, fishing nets or seaweed.

Diving buoy: When diving, buoys must be placed on the water surface to inform the surface ships to avoid.

Diving diary: used to record your diving experience, preferably signed by the diving supervisor.

Medicine box: used to put some commonly used medicines, such as band-AIDS, seasickness medicines, cold medicines, laxatives, etc.

Underwater recording board: used to fully communicate with potential partners underwater.

Underwater flashlight: an essential tool for diving at night.

Equipment bag: specially used to store diving supplies and equipment. Of course, it is best to carry valuables with you (such as diving computers).

Professional diving equipment

Diving photography: it has a special waterproof shell for underwater photography and video recording. At present, many photographic equipment manufacturers have introduced waterproof shells that match their own photographic equipment, and also introduced some special underwater photographic equipment.