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.

One embodiment of improved swim fins consists of a right foot attachment (101) with an outer right blade (111) and an inner right blade (112) which is arranged such that it does not mechanically interfere with an inner left blade (113). The blades may include a pivot mechanism (220) that allows the blades to maintain an optimal angle of attack as the swimmer moves their legs up and down. In another embodiment, a right blade (1011) and a left blade (1013) are attached to the feet of a person who is propelled by the blades above the surface of the water as they pump their feet up and down, forming a human-powered hydrofoil. Other embodiments are described and shown.

A swim fin may include a foot pocket configured to receive a foot of a swimmer and a fin blade extending from the foot pocket. The fin blade may be relatively stiff and flex about a hinge region proximate the foot pocket. Fin rails may extend along the lateral edges of the fin blade. The fin rails may include a fin spine comprising a plurality of fin spine segments joined in linear configuration. The swim fin may be configured to provide a swim fin with predetermined hydrodynamic characteristics. The swim fin may flex within a maximum angle of attack that may be variable and dynamically changed, within the predetermined maximum attack angle range, as a function of the kicking force generated by a swimmer during a kicking cycle.

Fins with a secondary blade set including a foot pocket portion, a main blade and a secondary blade set are provided. The foot pocket portion is used to fit a user's foot. The main blade includes a first end and a second end. The first end is fixed to the foot pocket portion and the second end is extended along the first direction that is away from the foot pocket portion. The secondary blade set includes at least one secondary blade which is disposed on the main blade via a fixing portion.

A fin for swimming and underwater activities includes at least one foot pocket configured to accommodate the foot of a user and at least one blade associated rigidly with the foot pocket. The fin further includes a substantially spherical joint interposed between the blade and the foot pocket. An upper portion of the joint is rigidly coupled to the base of the foot pocket; and a lower portion of the joint is rigidly coupled to the blade in a portion that is proximate to a respective first end. The joint is lockable in a plurality of different configurations and introduces at least two degrees of rotational freedom.

A swim fin and a method proving thrust propulsion during a swimmer's kicking cycle may include a foot pocket and a fin blade extending from the foot pocket. Fin rails may extend along the lateral edges of the fin blade. The fin rails may include an integral fin spine or separately assembled fin spine configured to provide a swim fin with predetermined hydrodynamic characteristics.

An example swimming device is provided. The swimming device includes a fin defining a first side and a second side opposing the first side. The swimming device includes a first mounting bracket coupling a first foot mount to the first side of the fin, and a second mounting bracket coupling a second foot mount to the second side of the fin. The first and second foot mounts are configured to receive respective feet of a user. When the feet of the user are received in the first and second foot mounts, the fin extends along or parallel to a median plane between the feet of the user.

A swim fin may include a foot pocket configured to receive a foot of a swimmer and a fin blade extending from the foot pocket. The fin blade may be relatively stiff and flex about a hinge region proximate the foot pocket. Fin rails may extend along the lateral edges of the fin blade. The fin rails may include a fin spine comprising a plurality of fin spine segments joined in linear configuration. The swim fin may be configured to provide a swim fin with predetermined hydrodynamic characteristics. The swim fin may flex within a maximum angle of attack that may be variable and dynamically changed, within the predetermined maximum attack angle range, as a function of the kicking force generated by a swimmer during a kicking cycle.

A fin for swimming and underwater activities includes at least one foot pocket configured to accommodate the foot of a user and at least one blade associated rigidly with the foot pocket. The fin further includes a substantially spherical joint interposed between the blade and the foot pocket. An upper portion of the joint is rigidly coupled to the base of the foot pocket; and a lower portion of the joint is rigidly coupled to the blade in a portion that is proximate to a respective first end. The joint is lockable in a plurality of different configurations and introduces at least two degrees of rotational freedom.

A composite dive fin assembly for a user swimming in a body of water having primary, secondary, and lateral portions which each define corresponding oppositely disposed propulsion surfaces. The primary, secondary, and lateral portions also each having a corresponding propulsion edge. The primary, secondary, and lateral propulsion surfaces cooperatively oriented to displace an amount of water over a corresponding one of the primary, secondary, and lateral propulsion edges when the composite dive fin assembly is moved in the body of water in which the user is swimming. The primary, secondary, and lateral propulsion surfaces are cooperatively configured to displace a greater amount of water over corresponding propulsion edges relative to previously known dive fins while reducing the resistive forces while displacing water, allowing a user to swim further and/or faster with the less effort.