PROBLEM TO BE SOLVED: To provide a creature extinction system capable of effectively annihilating specific water creatures required to be killed.SOLUTION: A creature extinction system 1000 irradiates creature-contaminated water CCW contaminated with various water creatures with an ultrasonic wave USW by a sonic irradiation element 1100, and the ultrasonic wave USW is switched over time to two or more kinds for killing specific water creatures. Thus, specific water creatures required to be killed can be efficiently annihilated in comparison with a case in which one kind of ultrasonic wave USW is continuously irradiated.COPYRIGHT: (C)2014,JPO&INPIT【課題】死滅させたい特定の水生生物を効率的に全滅させることができる、生物死滅システムを提供する。【解決手段】生物死滅システム1000は、各種の水生生物が混入している生物混入液体CCWに音波照射素子1100で超音波USWを照射し、この超音波USWを特定の水生生物を死滅させる複数種類に経時的に切り換える。このため、一種類の超音波USWを継続的に照射する場合に比較して、死滅させたい特定の水生生物を効率的に全滅させることができる。【選択図】図1
