Surfacing device, information management device, and detachable moving body

A surfacing device which is released from a submersible body submerged in under-water and floats to above-water and communicates with an external communication device, comprising:

• a surfacing unit that causes the surfacing device released from the submersible body to float from under-water to above-water;
• a communication unit capable of transmitting target information to the external communication device after the surfacing device has surfaced from under-water to above-water;
• and
• movement units for moving a target part which is at least a part of the surfacing device, after the surfacing device has surfaced from under-water to above-water;
• wherein
• the movement units move the target part by causing the target part to fly;
• the communication unit transmits the target information to the external communication device after the target part has started flying by the movement units;
• the target information includes distress signal.