Sarushima

{{Short description|Island off the coast of Kanagawa, Japan}}

{{Infobox islands

| name = Sarushima

| native_name = 猿島

| sobriquet = Monkey Island

| image_name = File:猿島.jpg

| image_size = 300px

| image_caption = Sarushima from the air

| image_alt = The island of Sarushima is golden on a late August day. In the lower right corner a few men on the deck of a boat look back at the island

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| pushpin_map = Japan Tokyo Bay and Boso Peninsula#Japan Kanagawa Prefecture

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| location = Yokosuka, Kanagawa

| coordinates = {{coord|35|17|10|N|139|41|39|E|region:JP_type:isle_scale:10000|display=inline,title}}

| archipelago =

| area_km2 = 0.055

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| coastline_km = 1.6

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| elevation_m = 39.3

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| country = Japan

}}

{{nihongo|Sarushima|猿島|extra="Monkey Island"}}, is a small island located off Yokosuka, Kanagawa in Japan. It is the only natural island in Tokyo Bay. Sarushima was used as a battery by the Tokugawa shogunate during the Edo period, and after the Meiji Restoration in 1868, the island was developed as part of the Yokosuka Navy Yard.{{cite encyclopedia | encyclopedia = Nihon Kokugo Daijiten | title = 猿島 | trans-title = Sarushima | url = http://rekishi.jkn21.com/ | accessdate = 2012-07-31 | year = 2012 | publisher = Shogakukan | location = Tokyo | language = Japanese | oclc = 56431036 | url-status = dead | archiveurl = https://web.archive.org/web/20070825113418/http://rekishi.jkn21.com/ | archivedate = 2007-08-25 }}{{cite encyclopedia | encyclopedia = Nihon Daihyakka Zensho (Nipponika) | title = 猿島 | url = http://rekishi.jkn21.com/ | accessdate = 2012-07-29 | year = 2012 | publisher = Shogakukan | location = Tokyo | language = Japanese | trans-title = Sarushima | oclc = 153301537 | url-status = dead | archiveurl = https://web.archive.org/web/20070825113418/http://rekishi.jkn21.com/ | archivedate = 2007-08-25 }}

Matthew C. Perry named the island Perry Island in 1853.{{Cite web|url = https://www.city.yokosuka.kanagawa.jp/0130/culture_info/documents/perry_yks.pdf#page=9|title = Matthew Calbraith Perry and Yokosuka|date = |accessdate = August 13, 2015|website = |publisher = Yokosuka|last = |first = |page = 9|archive-date = September 23, 2015|archive-url = https://web.archive.org/web/20150923204233/http://www.city.yokosuka.kanagawa.jp/0130/culture_info/documents/perry_yks.pdf#page=9|url-status = dead}}