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.

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.

The invention relates to an aquatic shoe consisting of a shoe body (1), a pair of wings (3) and floats (4, 4′), characterized in that the wings (3) are symmetrical, glued together, and linked to the shoe body (1), below the shoe, so as to constitute a part of the sole (2) of the shoe, and in that the float (4) is integrated below the wings (3), at the sole (2), so that one of its faces covers the sole (2), and in that the wings (3) are fixed by a pivot connection on both sides of the shoe, so that they descend when the foot ascends into the water and rise when the foot goes down into the water so that they return to their original position. The invention also relates to the use of footwear in the fields of recreational water and/or sport and in the paramedical fields. The shoe according to the invention can be used for the rehabilitation of animals.

An open field game arrangement includes glowing targets and provides responses, such as lights and sounds, when the targets are hit.

Described is a utility training flotation vest designed for physical and leisure activities such as strength training, cardiovascular training, water activities, posture assistance, body building competitions and hiking. This invention is comprised of one or more connector strap to assemble and/or disassemble, sling band, chambers, storage compartment, loop, fastener, working strap, compressed lining, mesh and optional attachments, preferably to limb straps. The sling band comprising of at least one adjustable working strap to adjust the customized strength and/or length wherein can expand and return to the original length. The chambers and compartment are designed to comprise the sling bag and/or weighted objects.

A system for learning to float including an aquatic learning station deployable in a volume of water. The learning station can include a horizontal member having an upper and a lower surface, wherein the horizontal member is supported in the volume of water with the upper surface located within four inches of a surface of the volume of water. The system can include a tether assembly coupled to the aquatic learning station. The tether assembly can include a tether portion releasably coupled to and extending away from the aquatic learning station and a belt portion connected to the tether portion and wearable by a person learning to float.

A floatation device is provided. In some embodiments, a floatation device is provided, comprising an inflatable ring composed of a transparent material, wherein the inflatable ring includes: an outer air chamber having a first valve for inflating the outer air chamber; an inner air chamber having a second valve for inflating the inner air chamber, wherein the outer air chamber and the inner air chamber are not in communication; a cut through the outer air chamber and the inner air chamber of the inflatable ring that forms opposing ends of the inflatable ring; and a plurality of fasteners placed on a top surface and a bottom surface of the outer or inner air chamber for detachably connecting the opposing ends of the inflatable ring.

A golf system comprising a reconfigurable golf green having a hole for receiving a golf ball, wherein the reconfigurable golf green includes a plurality of movable golf green sections (e.g. wherein the movable golf green sections are provided in a reconfigurable array).

The present invention relates to a chest float, comprising a float body; and a support pad, wherein both sides thereof are in detachable connection with both sides of the inner edge of the float body; first and second back limit pads are respectively extended from the two sides of the support pad, the first and second back limit pads are in detachable connection, and a wrapping space is enclosed by the support pad, and first and second back limit pads; when support pad is demounted from the inner edge of the float body from the two sides, the use state of the chest float is switched to the use state of a waist float. By means of the detachable design of the support pad, the chest float realizes the switching between the lying prone state and standing state of an infant, and is adapted to infants of different ages.

An open field game arrangement includes glowing targets and provides responses, such as lights and sounds, when the targets are hit.