2004 Volume 20 Pages 293-298
The main object of this research settles on the improvement plans for environment on a coral sea area around Awa-Takegashima underwater park in The East Shikoku distinct. Many people have pointed out the decrease and the change on the coral around this park in the past thirty years since 1972, when this sea area was designated for one of the underwater parks. We investigated the social, the nature and the stream conditions around this sea area.