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.
These hunts are a source of conflict between pro- and anti-whaling countries and organizations.
The UN's International Court of Justice, in addition to other Nations, scientists, and environmental organizations consider the Japanese research program to be unnecessary and lacking scientific merit, and describe it as a thinly disguised commercial whaling operation.
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.