Device for in-situ observation of apparent spectrum of water body

A floating device for optical observation of a water body, comprising:

• a floating body ring having a water-tight cavity for loading an electronic device and a power supply assembly, the water-tight cavity configured to provide flotage for the whole floating device, a ratio of an inner diameter to an outer diameter of the floating body ring being 0.80 to 0.85;
• and
• an optical probe mounting frame provided on the floating body ring in a direction perpendicular to a ring surface of the floating body ring;
• the optical probe mounting frame comprising:
• a vertical mounting assembly, and
• a horizontal connecting assembly having a first end and a second end, the horizontal connecting assembly provided radially along the ring shape of the floating body ring, the first end being connected to an outer side of the vertical mounting assembly and the second end being connected to the floating body ring, such that the vertical mounting assembly is radially positioned within the inner diameter of the floating body ring, and the horizontal connecting assembly being elongated with a body width smaller than a wire diameter of the floating body ring;
• and
• an optical probe vertically mounted on the optical probe mounting frame.