SCP-107 resembles the top section of a hollow turtle shell. Despite its appearance, whether this material is derived from the shell of a standard sea turtle (superfamily Chelonioidea) is, as yet, unknown. The item is completely inert until the inside of the turtle shell comes into contact with a liquid; when it does so, said liquid appears to be absorbed very quickly. Once active, the red edge of the shell glows dimly, and the substance placed into the shell begins to precipitate in the atmosphere and fall as 'rain' in the area at least 0.5 m, but less than 10 km, from the object.