A Study on Shoals and Bottom Organisms in Innermost Region of Tokyo Bay

Tokyo port is in innermost of Tokyo Bay which is the enclosed water. Kasai seaside park is on the east location of Tokyo port. This park are enclosed with Arakawa, Edogawa and Tokyo Bay, and mainly consists of the water. On this area, the shoals of old still survive and many organisms of sea live at present. This paper aims to investigate in the relation on the change of sea bottom and the organisms. We compare the shoals with the deep bottm or intertidal zone, and will find out the merit of the shoals.