Developed a model of an underwater microdron, the model is used as a rig for an underwater video camera. The microdron is designed to expand the functionality of the surface drone, which captures video of the coastline, with the addition of the underwater microdron to the structure of the underwater microdron, it is possible to switch video channels and receive video from the surface and underwater space. The microdron descends to a depth of 30 meters using a winch installed in the surface drone and follows the path of the surface drone in an uncontrollable state. In the microdron, the geometry of the body has been worked out, which allows it to ensure stability in the flow of water when moving, the camera does not dangle, the video is quite smooth and legible. This is a small but very important upgrade for a surface drone.