A construction kit of modular components including rigid and flexible foam bars with endcaps designed to be joined together by snap-fit connections to define three-dimensional, adult-sized playing fields which float in aquatic settings such as swimming pools. The connectivity of the modular components is characterized by manual assembly, a high resistance to separation during active play by teams of adults participating in vigorous athletic activities, and tool-assisted disassembly.

An apparatus comprises a wave generator configured to move water on a front side of the wave generator to generate a surfable wave and a displacer configured to move in synchronization with the wave generator, the displacer to displace water on a back side of the wave generator to compensate for water elevation changes on the back side of the wave generator that would occur in the absence of the displacer.

A target for a disc throwing game, including a receptacle including an open top, an open bottom connected to the open top, at least one aperture arranged between the open top and the open bottom, a first reflective member arranged elevationally below the at least one aperture, and a second reflective member arranged proximate the open top, and an illumination means securable only to an inside surface of the receptacle a distance from the at least one aperture, the illumination means operatively arranged to transmit light through the at least one aperture and the open top.

A convertible tiered game system comprising a plurality of tiered platforms, each tiered platform having at least one of a width and a length that is greater than any higher tiered platform, a plurality of tiered overlays configured to be seated upon each tiered platform among the plurality of tiered platforms, at least three of the tiered overlays comprising a center opening and having at least one of a width and a length that is greater than any higher tiered overlay, and a plurality of beverage container placement markers located on at least one of a tiered platform and a tiered overlay. The system may further comprise a lowest tiered overlay configured to rest on a same surface as the lowest tiered platform. The tiered overlays may comprise a lip extending downward along a vertical side wall of a tiered platform on which the tiered overlay is seated.

A swimming board having a buoyant board body having an upper surface defining, with a continuous body sidewall, a channel recessed into the board body and disposed proximal to the second end of the board body and having a strap fastening assembly coupled to the board body and with a groin strap and a waist strap that define apertures for receiving a user's legs and retaining the user to the board body.

The bilateral kicking board includes a body formed of a buoyant material and comprises first and second sides facing each other and extending in a lengthwise direction and third and fourth sides facing each other and extending in a widthwise direction perpendicular to the lengthwise direction. The first and second sides have a same length in the lengthwise direction, and the third and fourth sides have a same width in the widthwise direction. The length of the first and second sides being longer than the width of the third and fourth sides. A plurality of fasteners are provided on a surface of the body. The plurality of fasteners is sequentially arranged along the lengthwise direction, and each of the fasteners is configured to fasten a different respective part of a swimmer's hand to the bilateral kicking board.

A buoyancy-adjustable swim training vest for a user has a polymer-neoprene fabric formed garment member designed to substantially circumscribe the user's torso from neck to waist. A lower front of the vest has a front cover coupled to the vest and is vertically liftable. A back portion has a right side and a left side elastic wing members extending from a lower back portion designed to wrap frontward around the user's torso and detachably couple by respective hook and loop assemblies to each other, the vest, and the front cover, all coupled beneath the cover. An at least one polymer strap may be coupled detachably and adjustably by a latch to a buckle disposed on a lower edge of the front of the vest. At least one substantially sealable back pocket is disposed on an outer surface of the lower back portion of the vest designed to hold removable buoyant pads.

A water floatable bag toss target, the target including a landing surface disposed overlying a bottom surface by a left side, a right side, a front end and a back end each joined to the landing surface and bottom surface. The landing surface is positively sloped along its surface when moving from the front end toward the back end and the bottom surface is oriented horizontally. A scoring hole is in the landing surface and communicating with a scoring box compartment located between the landing surface and the bottom surface. The scoring box compartment has compartment walls extending between the landing surface and the bottom surface and dividing an inside of the target into an internal hollow compartment and the scoring box compartment. The internal hollow compartment is water-tight relative to the scoring box compartment and relative to an outside of the target.

Aspects of the present disclosure involve hydraulic systems and methods for altering a flow of a body of water, such as a river, channel, and/or other flowing or uncontained bodies of water. In one aspect, a hydraulic system provides a velocity barrier for the impedance of aquatic organism migration. More particularly, the velocity barrier may be adapted based on the swimming capabilities of one or more aquatic organisms to impede migration. The aquatic organism may be one or more species of fish, such as species sea lamprey (Petromyzon marinus). The example implementations shown and described herein reference the restriction of the sea lamprey. However, it will be appreciated that other aquatic organisms could be restricted by the presently disclosed technology, for example, with different hydraulic targets depending on swimming capabilities.

An underwater propulsion device is disclosed comprising two sleeves for fitting around each of a user's lower legs, with each sleeve mounting a propulsion unit, and the sleeves being connectable by a bar between them during underwater operation of the device by the user.