Ryssota otaheitana is endemic to the Philippines, mainly in Luzon and in the island of Panay. Ryssota otaheitana can normally be found underneath forest leaves and branches at the buttresses of tree. This species depends on moisture for survival. So it is abundant during the rainy season, while in the dry season it is present only in damp areas or in cool places.
This species is the largest land snail in the Philippines. Shells of Ryssota otaheitana can reach a diameter of 70–100 millimetre. These very large shells vary in color from pale brown to maroon and sometimes they show a brighter apex. The aperture is large and the interior may be white or bluish-white. The meat of these land snails (in Filipino called Bayuku) are considered a delicacy in Philippines.
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