Concerning the reefs of concrete block set, sunken at the 4-spots in the sea-front off Yamagawa-Town, Kagoshima-prefecture, diving observations were carried out with the following informations obtained. (1) The reefs showing the higher fish-gathering effectivities were ascertained to be those blocks having a so called the shape of a dish - a dimensionally formed shape in which there was at the center, a group of set-in-blocks each side of which having the length of 1.5m ; and this particular individual group was surrounded by other series of group-blocks each side of which having the length of about 3m. (2) The lowest fish-gathering effectivity was observed at the reefs made of the scrapped car, which had been scattered along the acutely sl...
During the period from the 30th of July in 1985 to the 31st of the same month, diving observations w...
In November of 1983, diving observation were carried out on the artificial concrete block reef subme...
Concerning the concrete block reefs and the tire reefs set at the off sea of Makurazaki City, diving...
Concerning the reefs of concrete block set, sunken at the 6 spots in the sea-front off Sendai city, ...
Concerning the concrete block reefs and the tire reefs set at the off sea of Makurazaki City, diving...
In March in 1981, diving observations were carried out on the eight Artificial reefs set at the Nort...
The artificial reefs consisting of the concrete blocks and the dilapidated bodies of the used cars a...
In November of 1983, diving observation were carried out on the artificial concrete block reef subme...
Diving observations were carried out twice in March and in May, 1979, concerning the following artif...
During the periods from the 27th of September in 1984 to August in the same year, and on the 23rd of...
As the result of the on the spot submerging observations of the artificial reef carried on the sea f...
Some diving observations were carried out on to the two sorts of the alluring reefs set in the two k...
During the period from August to September in 1980, diving observations were carried out on the eigh...
The artificial reefs consisting of the concrete blocks and the dilapidated bodies of the used cars a...
During the periods from the 27th of September in 1984 to August in the same year, and on the 23rd of...
During the period from the 30th of July in 1985 to the 31st of the same month, diving observations w...
In November of 1983, diving observation were carried out on the artificial concrete block reef subme...
Concerning the concrete block reefs and the tire reefs set at the off sea of Makurazaki City, diving...
Concerning the reefs of concrete block set, sunken at the 6 spots in the sea-front off Sendai city, ...
Concerning the concrete block reefs and the tire reefs set at the off sea of Makurazaki City, diving...
In March in 1981, diving observations were carried out on the eight Artificial reefs set at the Nort...
The artificial reefs consisting of the concrete blocks and the dilapidated bodies of the used cars a...
In November of 1983, diving observation were carried out on the artificial concrete block reef subme...
Diving observations were carried out twice in March and in May, 1979, concerning the following artif...
During the periods from the 27th of September in 1984 to August in the same year, and on the 23rd of...
As the result of the on the spot submerging observations of the artificial reef carried on the sea f...
Some diving observations were carried out on to the two sorts of the alluring reefs set in the two k...
During the period from August to September in 1980, diving observations were carried out on the eigh...
The artificial reefs consisting of the concrete blocks and the dilapidated bodies of the used cars a...
During the periods from the 27th of September in 1984 to August in the same year, and on the 23rd of...
During the period from the 30th of July in 1985 to the 31st of the same month, diving observations w...
In November of 1983, diving observation were carried out on the artificial concrete block reef subme...
Concerning the concrete block reefs and the tire reefs set at the off sea of Makurazaki City, diving...