Abstract: A sinker assembly includes a sinker and a sleeve removably coupled to a body of the sinker. The body of the sinker being constructed of a material with a first galvanic corrosion potential in salt water. The sinker having a line receiving channel extending along a longitudinal axis of the body. The sleeve includes a body portion defining a receiving aperture that is sized to receive the body of the sinker. The body portion being formed of a material with a second galvanic corrosion potential in the salt water that is different from the first galvanic corrosion potential. The difference between the first galvanic corrosion potential of the sinker and the second galvanic corrosion potential of the sleeve results in a voltage gradient in the salt water that stimulates an electrosensory system of an electrosensitive organism in the salt water.

Abstract: A cubic modular subsurface stormwater unit has equal top and bottom surfaces spaced apart by a set of four pillars, each of which runs from a corner of the top surface to a corresponding corner of the bottom surface. The pillars define a void having a generally cruciform cross section, the void opening onto each of the four side faces defined between the roof and the base. A line of units connected together in series side to side will have a long throughway formed by the respective voids in each unit, and a regular matrix of X- and Y-axis throughways will be formed as units are connected laterally on all sides. The unit is formed of identical halves which can be connected together in any orientation due to the square configuration and to a mating connection which has mating parts symmetrically disposed about a diagonal corner-to-corner line.

Abstract: A cubic modular subsurface stormwater unit has equal top and bottom surfaces spaced apart by a set of four pillars, each of which runs from a corner of the top surface to a corresponding corner of the bottom surface. The pillars define a void having a generally cruciform cross section, the void opening onto each of the four side faces defined between the roof and the base. A line of units connected together in series side to side will have a long throughway formed by the respective voids in each unit, and a regular matrix of X- and Y-axis throughways will be formed as units are connected laterally on all sides. The unit is formed of identical halves which cam be connected together in any orientation due to the square configuration and to a mating connection which has mating parts symmetrically disposed about a diagonal corner-to-corner line.