Have you heard of ice diving?

The commonly known diving methods include scuba diving and free diving The number of people who may know about ice diving is decreasing, so what is ice diving? Ice diving science popularization

Ice diving, as the name suggests, refers to diving in ice with water temperatures around zero degrees Celsius. Divers need to first drill a large hole on the water surface before diving activities. Due to the fact that this diving activity only has one entrance and exit, and the rest of the area is closed, a lot of additional training is required to be allowed to engage in this diving sport, similar to cave diving.

Ice diving is also a highly team oriented diving sport. Each diving team must be accompanied by two supervisors, who are responsible for firmly tying the diving divers with towing ropes and maintaining tension on the ropes at all times to prevent the divers from being entangled by excess ropes underwater. Finally, a rescue diver on standby is needed onshore.