The provided is a visualized biological trawl net system based on a submersible. The visualized biological trawl net system based on a submersible includes a fixation frame, and further includes a collection net, a filtering mechanism, a fish school observation camera and a central control system. The collection net is arranged at a rear of the fixation frame and used for collecting marine creatures; the filtering mechanism is arranged inside the fixation frame, and the filtering mechanism is used for screening marine creatures entering the collection net; the fish school observation camera is arranged at a top of the fixation frame, and the fish school observation camera is used for observing marine creatures; and the central control system is electrically connected with the fish school observation camera and used for controlling the fish school observation camera to monitor marine creatures.

A method and system for efficient and eco-friendly shrimp skimmer trawling by a trawling vessel with a trawl net, skimmer booms, net arms, and buoyantly adjustable rollers to maintain trawl net height and net opening without damage to the ocean floor allowing for systematic and frequent retrieval of catch while continuing trawling operations in intervals short enough to prevent death of by-catch and endangered species and where the system is fully storable on trailerable trawling vessels for maintenance of allowable highway heights. The system and method has the upper edge of the trawl net held above the ocean surface while the trawling vessel moves forward.

A method and system for efficient and eco-friendly shrimp skimmer trawling by a trawling vessel with a trawl net, skimmer booms, net arms, and buoyantly adjustable rollers to maintain trawl net height and net opening without damage to the ocean floor allowing for systematic and frequent retrieval of catch while continuing trawling operations in intervals short enough to prevent death of by-catch and endangered species and where the system is fully storable on trailerable trawling vessels for maintenance of allowable highway heights. The system and method has the upper edge of the trawl net held above the ocean surface while the trawling vessel moves forward.

A fishing device particularly designed for Asian carp fishing, which includes two fishing boats, a collection frame, a fishing net, a display mechanism with a plurality of optical sensors and optical receivers, one support mechanism for one fishing boat and one lifting mechanism for one fishing boat. The lifting mechanism includes a motor, a rotary shaft, a bait holding basket, a plurality of shaft supports and a plurality of rope units. Thus, a selected bait can be used for classification fishing. The quantity of fish catch can be determined timely through the display mechanism. The lifting mechanism allows steading lifting of the fish catch out of the water without introducing any harm to the fish catch. The number and survival rate of the fish catch can be ensured while an effective fishing can be achieved. This fishing device is particularly designed for catching Asian carp fishes.

A fishing device particularly designed for Asian carp fishing, which includes two fishing boats, a collection frame, a fishing net, a display mechanism with a plurality of optical sensors and optical receivers, one support mechanism for one fishing boat and one lifting mechanism for one fishing boat. The lifting mechanism includes a motor, a rotary shaft, a bait holding basket, a plurality of shaft supports and a plurality of rope units. Thus, a selected bait can be used for classification fishing. The quantity of fish catch can be determined timely through the display mechanism. The lifting mechanism allows steading lifting of the fish catch out of the water without introducing any harm to the fish catch. The number and survival rate of the fish catch can be ensured while an effective fishing can be achieved. This fishing device is particularly designed for catching Asian carp fishes.

A fishing device which includes a tow boat, a noise generator, a Catamaran boat plate, a collection net assembly, a Catamaran, two rigid tow bars and a plurality of bent tubes. The collection net assembly includes an inlet net frame, a collection net, a rectangular outlet door and two blocking nets. The problems in conventional fishing methods: low fish catch and large manpower requirement which is not suitable for large scale fishing in fishing with fishhooks and small fishing nets, as well as failure to provide classification fishing for silver carp which in turn resulted in low fishing efficiency, low work efficiency and wasting of manpower in seine fishing, can be resolved effectively.

A fishing device which includes a tow boat, a noise generator, a Catamaran boat plate, a collection net assembly, a Catamaran, two rigid tow bars and a plurality of bent tubes. The collection net assembly includes an inlet net frame, a collection net, a rectangular outlet door and two blocking nets. The problems in conventional fishing methods: low fish catch and large manpower requirement which is not suitable for large scale fishing in fishing with fishhooks and small fishing nets, as well as failure to provide classification fishing for silver carp which in turn resulted in low fishing efficiency, low work efficiency and wasting of manpower in seine fishing, can be resolved effectively.