<?xml version="1.0" encoding="utf-8"?><mads xmlns="http://www.loc.gov/mads/" xmlns:mods="http://www.loc.gov/mods/v3" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.loc.gov/mads/
mads.xsd"><authority><topic authority="http://AATesaurus.cultura.gencat.cat/aat/getty_en">swim fins</topic></authority><related type="broader"><topic>temporary alphabetical list: recreational artifacts</topic></related><variant type="other"><topic>fins, swim</topic></variant><variant type="other"><topic>swim fin</topic></variant> <note xml:lang="en"><![CDATA[ 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. ]]></note></mads>