Complex sentence: Zodiac boats were brought into American popular culture in the late 1960s, when they were as ubiquitous as wet suits, Aqualungs, and the Calypso, in the television documentary series, The Undersea World of Jacques Cousteau.
Split into simpler sentences: Zodiac boats were brought into American popular culture in the late 1960s. They were ubiquitous in the popular television documentary series, The Undersea World of Jacques Cousteau.