In Scuba diving, as one descends, in addition to the normal atmospheric pressure, water exerts increasing pressure on the chest and lungs—approximately so the pressure of the inhaled breath must almost exactly counter the surrounding or ambient pressure to inflate the lungs. By always providing the breathing gas at ambient pressure, modern equipment ensures the diver can inhale and exhale naturally and virtually effortlessly, regardless of depth.
We recommend you go from a beach your first time, not a boat. Jumping off a boat into deep water your first time can be daunting. Many first timers naturally are afraid that they will not float easily. Combine that fear with unease about breathing through a snorkel and using a mask, and pretty quickly it becomes a less fun first experience. This visitor story is why we suggest not going from a boat for your first experience.
1938: First swimmers’ mask with integrated breathing tubes. In 1938, French naval officer Yves Le Prieur introduces his "Nautilus" full-face diving mask with hoses emerging from the sides and leading upwards to an air inlet device whose ball valve opens when it is above water and closes when it is submerged. In November 1940, American spearfisherman Charles H. Wilen files his "swimmer’s mask" invention, which is granted US patent 2,317,237 of 20 April 1943. The device resembles a full-face diving mask incorporating two breathing tubes topped with valves projecting above the surface for inhalation and exhalation purposes. On 11 July 1944, he obtains US design patent 138,286 for a simpler version of this mask with a flutter valve at the bottom and a single breathing tube with a ball valve at the top. Throughout their heydey of the 1950s and early 1960s, masks with integrated tubes appear in the catalogues of American, Australian, British, French, German, Greek, Italian and Spanish swimming and diving equipment manufacturers. Meanwhile, in 1957, the US monthly product-testing magazine Consumer Reports concludes that "snorkel-masks have some value for swimmers lying on the surface while watching the depths in water free of vegetation and other similar hazards, but they are not recommended for a dive 'into the blue'". According to an underwater swimming equipment review in the British national weekly newspaper The Sunday Times in December 1973, "the mask with inbuilt snorkel is doubly dangerous (...) A ban on the manufacture and import of these masks is long overdue in Britain". In a decree of 2 August 1989, the French government suspends the manufacture, importation and marketing of ball-valve snorkel-masks. By the noughties, just two swim masks with attached breathing tubes remain in production worldwide: the Majorca sub 107S single-snorkel model and the Balco 558 twin-snorkel full-face model, both manufactured in Greece. In May 2014, the French Decathlon company files its new-generation full-face snorkel-mask design, which is granted US design patent 775,722 on 3 January 2017, entering production as the "Easybreath" mask (see Figure 3) designated for surface snorkelling only.
Have you been dreaming of warm summer days lying under palm trees at the beach or floating in the ocean on your surfboard? We have, and to prepare ourselves for the long awaited arrival of our favorite summer season we’ve been working hard on the designs for this season’s bikinis for women. At ROXY, we’re experts when it comes to surf lifestyle and beachwear, and our bikinis provide the best possible designs for you to slip into this summer. Bikinis are a staple of any surfer girl or beach bum’s wardrobe, and we want to make sure you’re dressed in the best when it comes to your day of fun in the sun.