Decoy fin

In combination, an anchor, an avian decoy, a submersible decoy fin, a first flaccid member coupling said anchor to said submersible decoy fin, and a second flaccid member coupling said submersible decoy fin to said decoy, said submersible decoy fin oscillatory upon interaction with moving water and operative to cyclically oscillate said decoy relative to said anchor during said interaction with moving water, said submersible decoy fin comprising:

• a unitary body having first and second couplings, and first, second and third generally planar fluid interaction sections, said second section having first and second major faces on opposed surfaces of said second section, said first and second generally planar fluid interaction sections angularly offset from each other by an obtuse angle with respect to said first major face of said second generally planar fluid interaction section and said second and third generally planar fluid interaction sections angularly offset from each other by an obtuse angle with respect to said first major face of said second generally planar fluid interaction section,
• a first interface defining a generally linear boundary between said first and said second generally planar fluid interaction sections and having a first termination adjacent an outer edge of said unitary body and a second termination adjacent an outer edge of said unitary body distal thereto;
• and
• a second interface defining a generally linear boundary between said second and third generally planar fluid interaction sections, said second interface angularly offset from said first interface and having a first termination adjacent an outer edge of said unitary body and a second termination adjacent an outer edge of said unitary body distal thereto and thereby defining a distance along said second generally planar fluid interaction section between said first interface first termination and said second interface first termination which is smaller than a distance along said second generally planar fluid interaction section between said first interface second termination and said second interface second termination;
• said first coupling formed in said first generally planar fluid interaction surface and located more nearly adjacent to said first interface second termination than said first interface first termination;
• said second coupling formed in said third generally planar fluid interaction surface and located more nearly adjacent to said second interface first termination than said second interface second termination.