A film about the members of the drifting station "SP-23", scientists who study the nature of the Arctic on ice and under water.
Caption: April 20, 1977. Several scuba divers work underwater by the light of flashlights.
A scientific station on an ice floe.
An explosion.
People carry an assembled spherical tent in their arms.
Scuba divers in the water under the ice.
Scuba divers emerge to the surface in an ice hole filled with snow and ice.
A scientist meets his returning comrades.
The divers take off their masks and equipment.
A meteorological installation, a scientist takes readings.
A drawing of the ice floe where the researchers are located, marks are applied to it indicating where the holes will be made.
Scientists indoors at a table discussing their work, looking at photographs and drawings.
Putting on a wetsuit before going into the water The divers in the ice hole, take equipment (one took a hammer), and dive into the water.
Scientists underwater, examining the ice, working with equipment.
Hydrology
Arctic
Wind, snowmobiles carry several people and luggage through the snow.
Setting up a tent with the inscription "SP-23".
Close-ups of men, members of the Polar Station.
Instruments and diving gear are carried into the tent.
A dog lies down on the snow in the wind, covering its nose with its paws.
A polar explorer is talking on a radiotelephone.
A dog by the tent.
Hands fasten a knife in a case to a leg.
Putting on a wetsuit.
The dog is watching.
A winch with a safety rope.
A scuba diver swims underwater with a flashlight in his hand, checking sensors installed on the underwater ice.
The diver's safety rope is caught on an ice floe.
A flashlight is lowered from the surface into a spare hole.
The scuba diver cuts the safety rope.
Polar explorers are standing around the spare hole, waiting.
The diver looks for an exit in the ice, swims toward a flashing flashlight, and surfaces.
A scuba diver emerges from a hole, takes off his diving mask.
Panning on the ice surface.
Water holes in the ice.
Motor sleds with people are driving on ice covered with water.
Scientists in wetsuits are at the tent.
The oxygen device and winch with safety rope are being checked.
The scuba divers are getting ready and diving under the water.
Hydrology
Arctic
Underwater footage of scuba divers studying the state of the ice and unusual species of sea creatures and algae.
Scientists holding a net and an underwater camera.
A scuba diver drills ice underwater with a hand brace.
Submariners holding an ice cylinder.
Taking water samples in the depths.
Surfacing.
The ice cylinder taken underwater is examined with a magnifying glass.
A panorama of laboratory equipment, a scientist at work.
Landscape shots with the setting sun, silhouettes of people.
Helicopter flyover of the nuclear-powered icebreaker Sibir moving through the ice.
A panorama of scientists, employees of the drifting station SP-23.
Hydrology
Arctic