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Surprisingly, many scuba divers claim that in cold latitudes you can find the most interesting inhabitants of the depths. Others prefer to scuba dive exclusively in warm waters. Others are equally happy to participate in various expeditions, going both to warm and cold edges. But underwater caves, rocks, overgrown with brown algae, which can be seen off the coast of Scotland, California or South Africa, are no less attractive. Importantly, it is in the cold latitudes where you can find well-preserved shipwrecks. An example is the northern coast of Scotland with the largest ship cemetery, which is located off the Orkney Islands. Cold Water Diving Suit Properties There are special insulating wetsuits for diving in cold latitudes. A scuba diver's body while in the water gradually cools, which can lead to hypothermia with serious consequences. The rate of cooling depends on the time spent in the cold water, the temperature of the water itself and the thermal protection properties of the suit. When choosing wetsuits take into account that under them you should wear several layers of warm clothing, and the neck should be wrapped with a scarf. It does not matter what type of wetsuit, the main thing that it was comfortable, does not restrict the swimmer's movements. Divers call these suits "dry". Also, to protect against the cold, "dry" gloves are used, neoprene or latex helmet is put on the head, the face is completely covered with a mask. The diver must be protected as much as possible from the effects of low temperatures. Repeated dives increase the risk of hypothermia, especially if you have not warmed up well between dives. After surfacing, hypothermia is possible due to the wind, which quickly lowers the body temperature. To avoid this, when you ascend, the wetsuit is inflated with air, which forms a thermal insulating layer. Going into the sea, divers stock up on warm jackets, hats, gloves. Diving under the ice - the most difficult kind of diving Diving in the cold waters of Scotland allows you to gain invaluable experience, which will later help in diving in more difficult conditions. The leader needs to seriously assess the risks of the dive and the real capabilities of his team. Safety rules recommend using a team of six people in ice diving: two dive, two insure and two wait on the surface. Swimming under the ice is the most interesting, and the most dangerous and technically difficult. Diving under the ice is possible in freshwater reservoirs, as well as in the seas and oceans, located in latitudes where it is so cold that the salt water freezes. Under the ice, the water is crystal clear, the wind and waves do not interfere with the sediment, which quickly sink to the bottom. Life beneath the water doesn't stop, even at very low temperatures. Divers can meet there amazing representatives of flora and fauna. No less fascinating is the exploration of sunken ships, where the lucky ones are waiting for interesting finds. Swimming under the ice is akin to diving in underwater caves. In both cases, in an emergency you will not be able to quickly rise to the surface. For diving an ice-hole is cut through the ice, the thickness of which is more than 15 centimeters. The size of the hole must be such that two people can move freely in it. At the same time, two scuba divers go under the water, for safety they are tied with a rope. The hole is illuminated with flashes of strobe light to give divers better visibility. Divers' equipment must meet accepted norms and standards. The design of the wetsuit must ensure the vital functions of the human body in very cold water. It is especially important that the gear does not freeze, it can lead to the death of the swimmer. Diving under the ice is carefully planned and conducted under the supervision of an experienced leader. Do you want to take part in an underwater expedition? Are you enticed by the mysteries of the deep world? Special centers in Norway, Sweden, Alaska provide training for those wishing to engage in ice diving. These courses provide valuable skills for safe diving. The most difficult part is to swim under the huge ice floes of the Arctic or Antarctic, that is what scientists exploring these areas do.