Kanagi (fishing method) - Kanagi

Japanese: カナギ（漁法） - かなぎ

…Rocky coasts are called iso or isohama, as opposed to sandy coasts. Rocky coasts are ideal habitats for seaweed and other fish and shellfish, and because the seawater is clearer there than on sandy beaches, they have played an important role in Japan's coastal fishing industry since ancient times, as a stage for iso fishing, which is called moriyasu in various regions or mitsuki, kanagi, isonegi, etc., in which fishermen use box glasses to look into the water and spear fish with hooks. [Takakuwa Morifumi]. …

From [Tomodo]

...They have now disappeared, and only one each at Takuhi Shrine in Oki and Miho Shrine in Izumo are preserved as specimens. Many still remain on Oki until the early Showa period, and they were used for the fishing method known as Kanagi. They are about 5.8m long and 90cm wide at the shoulder, made of fir and shaped like split bamboo, and in the past they were all carved from a single log.

*Some of the terminology that refers to "kanagi (fishing method)" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…砂浜海岸に対して，岩石海岸を磯あるいは磯浜という。岩礁性の海辺は，海藻をはじめ魚介類のかっこうの生息地となり，また砂浜に比べて海水の透明度が高いところから，古来より，箱めがねを用いて水中をのぞきながら，もりややす，あるいはかぎで魚を突くミツキ，カナギ，イソネギなどと各地で呼ばれる磯漁の舞台として，日本の沿岸漁業の中で重要な位置を占めてきた。【高桑守史】。…