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His grandson, Wada Kakuemon Yoriharu, later known as Taiji Kakuemon Yoriharu, invented the whaling net technique called amitori-shiki (網取り式).
Instead of trying to harpoon whales in open water, now twenty or more boats would encircle a whale and make a racket, driving it towards the shallows into nets wielded by a second group of six boats.
Japan continued to hunt whales using the scientific research provision in the agreement, and Japanese whaling is currently conducted by the Institute of Cetacean Research.
This was allowed under IWC rules, although most IWC members oppose it.
During the 20th century, Japan was heavily involved in commercial whaling.
This continued until the International Whaling Commission (IWC) moratorium on commercial whaling went into effect in 1986.
Japan maintains that annual whaling is sustainable and necessary for scientific study and management of whale stocks, though the Antarctic minke whale populations have declined since the beginning of the JARPA program Archeological evidence in the form of whale remains discovered in burial mounds suggests that whales have been consumed in Japan since the Jōmon period (between c. Without the means to engage in active whaling, consumption at that time primarily stemmed from stranded whales.