Fishing Tokyo Bay - Tokyo Bay or tokyo wan takes in the coasts of Kanagawa, Tokyo and Chiba and is a part of the Pacific Ocean, more specifically Uraga Channel. It is surrounded by the Miura Peninsula in Kanagawa and the Boso Peninsula in Chiba. The Tokyo Bay area is the most populous region in the world. The only natural island in Tokyo Bay is the tiny island of Sarushima or “Monkey Island” once upon a time a military installation to protect the bay and Tokyo, now a popular leisure and excursion destination for its beaches and hiking trails. There are also artificial islands made of landfill most notably Odaiba, which is now a shopping and entertainment complex.