The present invention provides a new energy-driven in-situ plankton collecting device, comprising a solar photovoltaic cell and wind power generation system, a buoyancy support system, a power supply and control system, a plankton suction and collection system, and an anchoring system. The device has the center of gravity on the lower part and vertically floats in water like a tumbler. The plankton suction and collection system is composed of a suction axial-flow pump and a collecting cod end. The bag-shaped plankton collecting cod end has the mesh aperture of less than 0.8 time the average body length of the target plankton, and can be used on both sides. The devices provided by the present invention can be used simultaneously and arranged in an array for collection and utilization of plankton as well as governance and remediation of water area environment, and thus have a favorable application prospect.

A fishing device includes a net disposed in a body of water containing fishes. A plurality of posts, wherein each post further includes a stem, a bottom cross disposed at a lower portion of the stem; a cross bar disposed at a top end of the stem; and a cord. The stem is an upright elongated protrusion extending from under a bottom to above a surface of the body of water. The cord is slidably secured to the cross bar. A first end of the cord is secured to a weight. A second end of the cord is secured to the net. The fishing device includes a release mechanism. The release mechanism grabs a portion of the cord to hold the weight in a first position adjacent to the cross bar. A bait system is disposed at or adjacent to a center of the net.

A fishing device includes a net disposed in a body of water containing fishes. A plurality of posts, wherein each post further includes a stem, a bottom cross disposed at a lower portion of the stem; a cross bar disposed at a top end of the stem; and a cord. The stem is an upright elongated protrusion extending from under a bottom to above a surface of the body of water. The cord is slidably secured to the cross bar. A first end of the cord is secured to a weight. A second end of the cord is secured to the net. The fishing device includes a release mechanism. The release mechanism grabs a portion of the cord to hold the weight in a first position adjacent to the cross bar. A bait system is disposed at or adjacent to a center of the net.

An aquatic specimen capture device may include a collapsible elongated container, a top and bottom rim lid attached to the collapsible elongated container, wherein a bottom rim lid further includes a fastener to attach the collapsible elongated container to another collapsible elongated container.

An aquatic specimen capture device may include a collapsible elongated container, a top and bottom rim lid attached to the collapsible elongated container, wherein a bottom rim lid further includes a fastener to attach the collapsible elongated container to another collapsible elongated container.

A fishing device includes a net disposed in a body of water containing fishes and a post installed near a perimeter of the net. The post further includes a stem, a cord, and a weight. A portion of the stem is above a surface of the body of water, and the cord is slidably secured to the stem. A first end of the cord is attached to the weight, and a second end of the cord is attached to the net. The weight is configured to move from a first position to a second position upon receiving wireless communication, and the first position is higher than the second position.

A fishing device includes a net disposed in a body of water containing fishes and a post installed near a perimeter of the net. The post further includes a stem, a cord, and a weight. A portion of the stem is above a surface of the body of water, and the cord is slidably secured to the stem. A first end of the cord is attached to the weight, and a second end of the cord is attached to the net. The weight is configured to move from a first position to a second position upon receiving wireless communication, and the first position is higher than the second position.

A mechanical fish trap system is adapted to be installed in native water environments. The trap chamber is positioned in a first native water environment. The chamber includes a trap gate to allow a fish to swim into the trap chamber and then retain it therein. A water pipe is connected to the trap chamber. A water pump then pumps water through the water pipe and into the trap chamber and out the trap gate. The water pipe inlet is positioned in a second native water environment that is imbalanced with the water in the first native water environment.

A mechanical fish trap system is adapted to be installed in native water environments. The trap chamber is positioned in a first native water environment. The chamber includes a trap gate to allow a fish to swim into the trap chamber and then retain it therein. A water pipe is connected to the trap chamber. A water pump then pumps water through the water pipe and into the trap chamber and out the trap gate. The water pipe inlet is positioned in a second native water environment that is imbalanced with the water in the first native water environment.

A harvesting mechanism for a fishing device includes an actuator, a wireless receiver for receiving a wireless signal to control the actuator, and a rope securing mechanism mechanically coupled to the actuator. The rope securing mechanism secures a rope. In response to receiving the wireless signal, the wireless receiver activates the actuator to cause the rope securing mechanism to release the rope.