The invention discloses a submerged type environment-friendly aquatic benthonic animal catching device. The front part is provided with a catching half boat shaped like an inverted submarine, the backpart is provided with a collection bag net and a waterdrop-shaped buoy, a nose is a drag traction position, and a power cable is arranged along with a drag cable. An attitude and depth perception system and a control system are packaged in the device, an inert gate electrode is arranged in the center of the front part of a lower shell surface, and an arc-shaped dome slope communicates to the collection bag net. The device has the characteristics of a tumbler after being optimized; an upper shell surface and the lower shell surface are asymmetric, and the lower shell surface bulges more, so that the device is floated but has a sinking trend in motion, and the device is suspended within a certain distance on the water bottom in operation. Electric field conditions and escape parameters forforcing target animals to escape due to disturbance are pre-measured and are input to the control system by an upper computer, and then a specific disturbance electric field is generated for forcing the target benthonic animals to be roused and fall into the collection bag net to be caught. The device is not in contact with the water bottom in catching operation, so that the benthonic ecological environment is not destroyed, and the device is environment-friendly and suitable for popularization and application.

一种下潜式的环境友好型水生底栖动物捕捞装置，前部为一个形似倒置潜艇的捕捞半艇，后部是收集囊网及水滴形浮漂，艏鼻为拖曳牵引位置，电缆伴随拖曳缆绳布设。其内部封装姿态与深度感知系统及控制系统，下壳面前部正中为惰性栅状电极，之后为弧形穹斜面通往收集囊网。其优化后具有不倒翁的特性，上下壳面不对称，下壳面更凸出一些，自身漂浮但运动时有下沉趋势，捕捞作业时悬浮于水底上一定距离之内。预先测定迫使目标动物惊扰逃逸的电场条件与逃逸参数，由上位机输入至控制系统中，进而产生特定的惊扰电场，迫使目标底栖动物被惊起并落入收集囊网之中而被捕获。本发明捕捞作业时不与水底相接触，不破坏底栖生态环境，绿色环保，适宜推广应用。