Wachusett Reef

Captain Lambert of the ship "Wachusett" reported that on June 4, 1899 he passed over a reef which appeared to be of coral formation in approximately latitude . The reef appeared to be about 500 feet wide. The bottom showed of a dark gray color with deep blue on both sides of the reef. The depth was estimated at from 5 to 6 fathoms; unfortunately no soundings were taken.
The 2015 edition of the "National Geographic Atlas of the World" still shows Wachusett Reef, with a depth of 9 meters. Nevertheless, its existence is doubtful, making it a phantom reef. Other nearby historically reported reefs which appear to not exist include Ernest Legouve Reef, Jupiter Reef, and Maria Theresa Reef.