The bay took its present name in modern times, after the Imperial court moved to Edo and renamed the city Tokyo in 1868.

[1][2] The shore of Tokyo Bay consists of a diluvial plateau and is subject to rapid marine erosion.

The Imperial Japanese Navy maintained a degaussing station on the island until the end of World War II.

The island briefly opened as a public beach before being repurposed and used as a landfill between 1957 and 1967 to dispose of the large quantities of garbage from the Tokyo Metropolitan Area.

Hakkei Island (0.24 km2 (0.093 sq mi)), formerly Landfill Number 14, was constructed in 1985 and is home to Yokohama Hakkeijima Sea Paradise.

Areas along the shore with a depth of less than 5 m (16 ft) are simplest to carry out landfill, and sand from the floor of Tokyo Bay is used for these projects.

The topography of the shoreline of Tokyo Bay differs greatly from that of the pre-modern period due to ongoing land reclamation projects.

This was expanded to the Keiyō Industrial Zone in Chiba Prefecture along the north and east coasts of Tokyo Bay after World War II.

[5] The large-scale industrial zones of the coastal Tokyo region have caused significant air and water pollution.

Perry sailed on his four "Black Ships" into Edo Bay on July 8, 1853, and began negotiations with the Tokugawa shogunate that led to a peace and trade treaty between the United States and Japan in 1854.

[10][11] The Japanese Instrument of Surrender at the end of World War II was signed on September 2, 1945, on board USS Missouri (BB-63), which was anchored at 35° 21′ 17″ N 139° 45′ 36″ E. A flag from one of Commodore Perry's ships was flown in from the Naval Academy Museum and displayed at the ceremony.