A harvesting device particularly suited for harvesting artemia cysts. The invention in its various embodiments comprises a frame and a net coupled to the frame. The frame can include a front support frame, a rear support frame and a sledding frame. A net having a first end and a second end can be secured to the front and rear support frames respectively. In certain embodiments, the net has an aspect ratio or 4:1. One or more skids can be coupled to the frame. In certain embodiments, the skids are coupled to the sledding frame. In yet other embodiments, the skids are coupled to the sledding frame at substantially the joining of the front support frame and the sledding frame. The second end of the net can be attached to a conduit in communication with a harvest vessel by a coupling. The harvest vessel can include one or more dewatering stations in communication with the conduit.

A harvesting device particularly suited for harvesting artemia cysts. The invention in its various embodiments comprises a frame and a net coupled to the frame. The frame can include a front support frame, a rear support frame and a sledding frame. A net having a first end and a second end can be secured to the front and rear support frames respectively. In certain embodiments, the net has an aspect ratio or 4:1. One or more skids can be coupled to the frame. In certain embodiments, the skids are coupled to the sledding frame. In yet other embodiments, the skids are coupled to the sledding frame at substantially the joining of the front support frame and the sledding frame. The second end of the net can be attached to a conduit in communication with a harvest vessel by a coupling. The harvest vessel can include one or more dewatering stations in communication with the conduit.

A device mounted to a vessel for harvesting a subsurface concentration of artemia cysts. In certain embodiments, the device includes a vertically adjustable front net support, a vertically adjustable rear net support and a net having a first end secured to the front net support and a second end secured to the rear net support. A conduit can be coupled to the second end of the net whereby the concentrated artemia cysts are drawn from the second end of net to a processing destination. In certain embodiments, the net has an aspect ratio of at least approximately 4:1. The processing destination could be the vessel or some other destination. In certain embodiments, the vessels are equipped with a dewatering station to which the concentrated cysts are directed for further processing. In some embodiments, the net is secured to a frame which is in turn coupled to the front net support. The front net support can include one or more arms. In certain embodiments, the front net support includes a brace which can be attached to the vessel. The brace can include one more sleeves that correspond to the one or more arms and be hingedly attached to the vessel.

A device mounted to a vessel for harvesting a subsurface concentration of artemia cysts. In certain embodiments, the device includes a vertically adjustable front net support, a vertically adjustable rear net support and a net having a first end secured to the front net support and a second end secured to the rear net support. A conduit can be coupled to the second end of the net whereby the concentrated artemia cysts are drawn from the second end of net to a processing destination. In certain embodiments, the net has an aspect ratio of at least approximately 4:1. The processing destination could be the vessel or some other destination. In certain embodiments, the vessels are equipped with a dewatering station to which the concentrated cysts are directed for further processing. In some embodiments, the net is secured to a frame which is in turn coupled to the front net support. The front net support can include one or more arms. In certain embodiments, the front net support includes a brace which can be attached to the vessel. The brace can include one more sleeves that correspond to the one or more arms and be hingedly attached to the vessel.

An apparatus that secures the buoy line and buoy to the top of the shellfish trap in an orderly manner until a galvanic timed release (GTR) coupling parts and releases the buoy to the sea surface. The GTR is a highly corrosive anode link which breaks after a predetermined period of immersion in seawater. After the GTR link breaks, the apparatus automatically releases the buoy. The unrestrained buoy rises to the surface so that the trap may be recovered. Until this time, marine mammals are protected from entanglement in the vertical buoy line. It is important that the buoy and, perhaps more importantly, the line associated with it, are packaged in a way to prevent fouling of the buoy lines. By design, the apparatus prevents the fouling of the buoy line that would result in the possible loss of the entire gear set.

An apparatus that secures the buoy line and buoy to the top of the shellfish trap in an orderly manner until a galvanic timed release (GTR) coupling parts and releases the buoy to the sea surface. The GTR is a highly corrosive anode link which breaks after a predetermined period of immersion in seawater. After the GTR link breaks, the apparatus automatically releases the buoy. The unrestrained buoy rises to the surface so that the trap may be recovered. Until this time, marine mammals are protected from entanglement in the vertical buoy line. It is important that the buoy and, perhaps more importantly, the line associated with it, are packaged in a way to prevent fouling of the buoy lines. By design, the apparatus prevents the fouling of the buoy line that would result in the possible loss of the entire gear set.

The present invention is a collapsible bait net comprising netting mounted to a flexible flat metal bar or blade joined at its ends by a fastening means to form a closed hoop net assembly that maintains its shape and structural integrity. The assembly includes six stabilizing cords positioned equidistant from each other along the circumference of the closed hoop, which cords converge at the center of the assembly, and are connected to each other by a fastening means. The six stabilizing cords are connected to a single draw cord which is used to cast the bait net into a desired depth of water then pull it back. The assembly collapses for easy storage by rotating or twisting into a double figure 8 configuration having three sections that are folded onto each other from top to bottom to create three smaller overlapping closed hoops.

The present invention is a collapsible bait net comprising netting mounted to a flexible flat metal bar or blade joined at its ends by a fastening means to form a closed hoop net assembly that maintains its shape and structural integrity. The assembly includes six stabilizing cords positioned equidistant from each other along the circumference of the closed hoop, which cords converge at the center of the assembly, and are connected to each other by a fastening means. The six stabilizing cords are connected to a single draw cord which is used to cast the bait net into a desired depth of water then pull it back. The assembly collapses for easy storage by rotating or twisting into a double figure 8 configuration having three sections that are folded onto each other from top to bottom to create three smaller overlapping closed hoops.

An underwater mobile body includes: a movement control unit that controls movement underwater; a detection unit that moves underwater under the control of the movement control unit and that detects a position of a fish; and a guidance unit that guides the fish based on the position of the fish detected by the detection unit.

An underwater mobile body includes: a movement control unit that controls movement underwater; a detection unit that moves underwater under the control of the movement control unit and that detects a position of a fish; and a guidance unit that guides the fish based on the position of the fish detected by the detection unit.