PROBLEM TO BE SOLVED: To solve problems of a conventional fishing method in which a sea surface is lighted up with a powerful light for gathering fish and a large quantity of electric power is necessary, and therefore a fuel cost of an electric generator and other expenses are required, and also an efficient collection method and device of small rocks obtained by crushing minerals in the seabed, e.g., manganese nodules or a hydrothermal deposit discovered in late years with a machine drill is not present.SOLUTION: A collection device by bubble generating means is characterized as follows: a tip of a tube is spread in a shape of a trumpet from a ship board mainly to underwater and seabed the bubble generating means is inserted and installed upward in the inside of the tube in the upper part from the tip also, fish luring effect can be obtained when light emitting means is installed to the tube tip and is made to emit light mass bubbles are generated in the tube when sending high pressure air into the bubble generating means, and the bubbles rise sharply in the tube, and therefore a water flow of fast flowing stream is made in the tube also, the fish is made to gather because of the fish luring effect by light and sea urchins, sea cucumbers, etc., being fish and shellfish, and minerals, etc., existing in the underwater and seabed are discharged on the ship board by using the water flow of the fast flowing stream.SELECTED DRAWING: Figure 2COPYRIGHT: (C)2017,JPO&INPIT【課題】従来、強力な光で海面を照らし、集魚していた漁法では、大量の電力が必要であり、そのため発電機の燃料費やその他の経費がかかっていた。また、海底にある鉱物、例えばマンガン団塊、近年発見された、熱水性鉱床を削岩機で粉砕された小さい岩石の効率の良い採集方法や装置がなかった。【解決手段】主に海中、海底まで船上から、筒の先端部がラッパ状に広がり、該先端部より上部に、該筒の内部に泡発生手段を上方に向けて、挿入、装着し、また、該筒先端部に発光手段を装着し、発光させると、集魚効果が得られる、該泡発生手段に高圧空気を送り込むと、前記筒内に大量の泡が発生し、該泡が筒内を急上昇するので、筒内に急流の水流が出来、また、光により集魚効果があるので集魚し、この急流の水流を利用して、海中、海底に存在する、魚介類であるウニ、ナマコ等及び鉱物などを船上まで放出することを特徴とする。【選択図】図2
