Disclosed is a method for optimization design of an artificial reef structure. The method includes: arranging an artificial reef model to be tested on a test platform, testing a flow field to obtain flow field data and a pull force of an artificial reef, analyzing the flow field data to obtain a flow velocity reference point, and carrying out optimization analysis in combination with the flow field data and the pull force.

Disclosed is a method for optimization design of an artificial reef structure. The method includes: arranging an artificial reef model to be tested on a test platform, testing a flow field to obtain flow field data and a pull force of an artificial reef, analyzing the flow field data to obtain a flow velocity reference point, and carrying out optimization analysis in combination with the flow field data and the pull force.

An artificial habitat for a variety of aquatic taxa, including fish, which provides dynamic habitat consisting of buoyant, corrugated high or low density polyethylene pipe split longitudinally as to form two or more strips of ribbed material that curls to mimic aquatic plant genera such as Vallisneria.

A securing clip includes: an enclosure body including a first end, a second end, and one or more sidewalls that extend between the first end and the second end; one or more fragment module securing tangs extending, from one or more of the sidewalls, into the cavity such that when at least a portion of the fragment module is placed within the cavity, at least a portion of the fragment module securing tang is designed to engage with the fragment module and prevents and/or impedes removal of at least a portion of the fragment module from the cavity; and one or more substrate securing tangs extending from the enclosure body and away from the cavity, each substrate securing tang designed to prevent and/or impede removal of the securing clip when the securing clip is placed into a substrate aperture defined within the substrate

A securing clip includes: an enclosure body including a first end, a second end, and one or more sidewalls that extend between the first end and the second end; one or more fragment module securing tangs extending, from one or more of the sidewalls, into the cavity such that when at least a portion of the fragment module is placed within the cavity, at least a portion of the fragment module securing tang is designed to engage with the fragment module and prevents and/or impedes removal of at least a portion of the fragment module from the cavity; and one or more substrate securing tangs extending from the enclosure body and away from the cavity, each substrate securing tang designed to prevent and/or impede removal of the securing clip when the securing clip is placed into a substrate aperture defined within the substrate

A fish attracting assembly includes a tree that is positionable between a collapsed position and a deployed position. The tree is may be inserted through an ice fishing hole when the tree is positioned in the collapsed position. The tree is substantially comprised of a buoyant material. Thus, the tree is positioned in the deployed position when the tree is inserted through the ice fishing hole. A camera is coupled to the tree and the camera captures images below the ice fishing hole. A light emitter is coupled to the tree and the light emitter emits light below the ice fishing hole.

A fish attracting assembly includes a tree that is positionable between a collapsed position and a deployed position. The tree is may be inserted through an ice fishing hole when the tree is positioned in the collapsed position. The tree is substantially comprised of a buoyant material. Thus, the tree is positioned in the deployed position when the tree is inserted through the ice fishing hole. A camera is coupled to the tree and the camera captures images below the ice fishing hole. A light emitter is coupled to the tree and the light emitter emits light below the ice fishing hole.

Systems and methods for creating habitats for benthic macro-invertebrate organisms and fish are provided. The system contains a platform and woody material attached thereto. The platform also contains openings for trapping useful organic materials, such as leaf pack and wood, and tassels that provide additional habitats or attached the woody material. The system may be installed in a river, stream, creek, or other fresh water source. The platform may be substantially flat, or may be bent to form a hollow-tube-shaped structure, with openings at both ends of the structure. The systems provide habitat, places to hold on during high flows, places to trap useable organics such as leaf pack and wood and nesting areas to support macrobenthic organisms. The system can be placed into a stream channel to restore the stream or maintain healthy conditions in a stream.

Systems and methods for creating habitats for benthic macro-invertebrate organisms and fish are provided. The system contains a platform and woody material attached thereto. The platform also contains openings for trapping useful organic materials, such as leaf pack and wood, and tassels that provide additional habitats or attached the woody material. The system may be installed in a river, stream, creek, or other fresh water source. The platform may be substantially flat, or may be bent to form a hollow-tube-shaped structure, with openings at both ends of the structure. The systems provide habitat, places to hold on during high flows, places to trap useable organics such as leaf pack and wood and nesting areas to support macrobenthic organisms. The system can be placed into a stream channel to restore the stream or maintain healthy conditions in a stream.

A shark barrier includes a plurality of resiliently flexible, elongate members that extend in a generally upright condition between a sea floor and a sea surface. The elongate members are arranged so as to have the appearance of a thicket, preferably a kelp forest, when viewed from within the water and include magnets to assist in deterring certain shark species. The elongate members may be secured to the sea floor by an anchoring base and are held in the generally upright condition by a buoy or buoyant material held within the elongate members.