Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Furnishings and Equipment (hierarchy name)
4. Recreational Artifacts (hierarchy name)
5. recreational artifacts (equipment)
6. [temporary alphabetical list: recreational artifacts]

Anotations

Scope note:

Triangular, flexible appendages built to improve underwater movement, worn on the feet and sometimes also attached to the ankles with a single loop. Usually made of rubber. Commercial swim fins were first patented by Owen Churchill (1896-1985) in the 1930s.