It can also be categorized by the sensory input as either canals, otolith, or both. It may also be an otolith or statolith. However, some studies disprove a direct link between body growth and otolith growth. A spherical vestibule contains a large saccular otolith, which transmits vibrations to the snake's brain. The underlying mechanism involves a small calcified otolith moving around loose in the inner ear. As the otolith grows, new calcium carbonate crystals form. Information from the otolith organs reflects gravity and linear accelerations of the head. The otolithic membrane is part of the otolith organs in the vestibular system. The oldest known individual was 11 years old based on otolith rings. "Otolith" referred to the frog's inner ear balance mechanism. The calcium carbonate that the otolith is composed of is primarily derived from the water. The payload was the Frog Otolith Experiment Package (FOEP). The otolith organs include the utricle and the saccule. The other artists nominated were Dexter Dalwood, Angela de la Cruz, and the Otolith Group. Otolith size is also proportional to the length and weight of a fish.