What is Filippo Reef?
[[File:KI Line islands.PNG|thumb|330x330px|Map of the Line Islands, Filippo Reef is also shown]] '''Filippo Reef''' is a [[coral reef]] in the [[Pacific Ocean]]. It is located at {{Coord|05|30|S|151|50|W|display=inline}}, {{convert|450|km|mi}} east of [[Starbuck Island]] in the [[Line Islands]]. The reef was reported by the master of the Italian barque ''[[Filippo]]'' who saw it on 28 June 1886. From an unidentified report of [[Breaker (reef)|breakers]] dated 1926, it was estimated to have a water depth of only {{convert|0.6|to|0.9|m|ft|0}}, and appeared to be about {{convert|1.6|km|mi|1}} long northwest to southeast, and less in width.<ref>{{cite web |title=Sector 2. The Line Islands, the Cook Islands, the Samoa Islands, and the Tonga Islands |work=Pub. 126: Sailing Directions (Enroute): Pacific Islands |author=National Geospatial-Intelligence Agency |edition=10 |page=42 |location=Springfield, Virginia |year=2013 |url=http://msi.nga.mil/MSISiteContent/StaticFiles/NAV_PUBS/SD/Pub126/Pub126bk.pdf |access-date=7 May 2013 |archive-date=5 December 2014 |archive-url=https://web.archive.org/web/20141205102635/http://msi.nga.mil/MSISiteContent/StaticFiles/NAV_PUBS/SD/Pub126/Pub126bk.pdf |url-status=dead }}</ref> The only sighting referenced shows a date of 1926. The topographic data supplied by the [[General Bathymetric Chart of the Oceans]] (GEBCO), however, shows a sea depth of {{convert|3.3|mi|km}}.<ref>[http://www.gebco.net General Bathymetric Chart of the Oceans (GEBCO)]</ref><ref>{{cite web |title=Filippo Reef |work=WolframAlpha.com |url=http://www.wolframalpha.com/entities/undersea_features/filippo_reef/q1/il/vm |access-date=7 May 2013 |archive-date=30 June 2013 |archive-url=https://archive.today/20130630161943/http://www.wolframalpha.com/entities/undersea_features/filippo_reef/q1/il/vm |url-status=dead }}</ref> It is therefore likely that this 1926 report is an error, and that Filippo Reef is a [[phantom island]]. Maps showing the reef rely on the report of 1926, and are likely in error. Nevertheless, it is