Hahajima is the second-largest island of the Ogasawara Islands south of the Japanese main island chain. It is about 21 km2 (8 sq mi) in area with a population of 440.
Conus marmoreus, common name the "marbled cone", is a species of predatory sea snail, a marine gastropod mollusk in the family Conidae, the cone snails, cone shells or cones. It is the type species for the genus Conus. This is a species which is believed to feed mostly on marine molluscs including other cone snails. This snail is venomous, like all cone snails.
Bulimulus is a genus of small to medium-sized tropical or sub-tropical, air-breathing land snails, pulmonate gastropod mollusks in the subfamily Bulimulinae within the family Bulimulidae.
Bradybaeninae is a taxonomic subfamily of medium-sized to small land snails, terrestrial pulmonate gastropod mollusks in the family Camaenidae, superfamily Helicoidea.
Euhadra is a genus of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the subfamily Bradybaeninae of the family Camaenidae.
Hirasea acutissima is a species of small air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Charopidae. The width of the shell is 2 mm. The height of the shell is 4 mm. H. acutissima is endemic to Haha-jima in the Ogasawara Islands, Japan, and is listed as endangered in the IUCN Red List of Threatened Species. In 2007, the species was rediscovered after being considered to be extinct.
Hirasea is a genus of small, pulmonate land snails in the family Charopidae. This genus sees its highest diversity in the Hawaiian Islands, but species are distributed throughout Japan and Polynesia.
Idiomela subplicata is a species of medium-sized air-breathing land snail, a terrestrial pulmonate gastropods in the family Helicidae, the typical snails.
Mandarina is a genus of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Bradybaenidae.
Mandarina mandarina is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Camaenidae. This species is endemic to Japan.
Mandarina luhuana is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Camaenidae. This species is endemic to Japan.
Ogasawarana yoshiwarana is a species of land snail with an operculum, a terrestrial gastropod mollusk in the family Helicinidae, the helicinids.
Partula is a genus of air-breathing tropical land snails, terrestrial pulmonate gastropod mollusks in the family Partulidae. Many species of Partula are known under the general common names "Polynesian tree snail" and "Moorean viviparous tree snail". Partulids are distributed across 5,000 sq mi (13,000 km2) of Pacific Ocean islands, from the Society Islands to New Guinea.
Neritona granosa is a species of freshwater snail with an operculum, an aquatic gastropod mollusk in the family Neritidae, the nerites.
Neritina pulligera, common name the dusky nerite, is a species of freshwater snail, a gastropod mollusk in the family Neritidae.
