The Bonin Islands, also known as the Ogasawara Islands (小笠原諸島), is a Japanese archipelago of over 30 subtropical and tropical islands located around 1,000 kilometers (620 mi) SSE of Tokyo and 1,600 kilometers (1,000 mi) northwest of Guam. The group as a whole has a total area of 84 square kilometers (32 sq mi) but only two of the islands are permanently inhabited, Chichijima and Hahajima. Together, their population was 2,560 as of 2021. Administratively, Tokyo's Ogasawara Subprefecture also includes the settlements on the Volcano Islands and the Self-Defense Force post on Iwo Jima. The seat of government is Chichijima.
Hahajima, Haha Jima, or Haha-jima is the second-largest island within the Bonin or Ogasawara Islands SSE of the Japanese Home Islands. The steeply-sloped island, which is about 21 km2 (8 sq mi) in area, has a population of 440. It is part of Ogasawara Village in Ogasawara Subprefecture, which is approximately 1,000 km (620 mi) south of Tokyo, Japan.
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.
Helicoidea is a taxonomic superfamily of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the clade Stylommatophora.
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.
Achatinella apexfulva is a reportedly extinct species of colorful, tropical, arboreal pulmonate land snail in the family Achatinellidae, once present on Oahu, Hawaii. A. apexfulva is the type species of the genus Achatinella. The specific name, apexfulva, meaning "yellow-tipped", refers to the yellow tip of the snail's shell. Inspired from the taxon, the species has been given common names such as yellow-tipped Oʻahu tree snail or Hawaiian yellow-tipped tree snail.
Amphidromus is a genus of tropical air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Camaenidae. The shells of Amphidromus are relatively large, from 25 mm (0.98 in) to 75 mm (3.0 in) in maximum dimension, and particularly colorful. During the 18th century, they were among the first Indonesian land snail shells brought to Europe by travelers and explorers. Since then, the genus has been extensively studied: several comprehensive monographs and catalogs were authored by naturalists and zoologists during the time period from the early 19th to the mid 20th centuries. Modern studies have focused on better understanding the evolutionary relationships within the group, as well as solving taxonomic problems.
Euhadra sadoensis is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Bradybaenidae. This species is found in Japan.
Mandarina luhuana is an extinct species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Bradybaenidae. This species is endemic to Chichi-jima and Minami-jima of the Bonin Islands in Japan.
Ogasawarana ogasawarana is a species of land snail with an operculum, a terrestrial gastropod mollusk in the family Helicinidae, the helicinids.
Ogasawarana yoshiwarana is a species of land snail with an operculum, a terrestrial gastropod mollusk in the family Helicinidae, the helicinids.
Vertigo dedecora is a species of very small air-breathing land snail, a terrestrial pulmonate gastropod mollusk or micromollusk in the family Vertiginidae.
Camaenidae is a family of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Helicoidea, the typical snails and their allies. This is one of the most diverse families in the clade Stylommatophora.
Euhadra peliomphala is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Bradybaenidae.
Euhadra senckenbergiana is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Bradybaenidae. This species is found in Japan.
Cathaica fasciola is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Camaenidae, which is similar to Cathaica pyrrhozona on shell morphology.
The Bonin Islands are an archipelago of over 30 subtropical and tropical islands, some 1,000 kilometres directly south of Tokyo, Japan and 1,000 miles northwest of Guam.
