The Mollusk is the sixth full-length album by American experimental rock band Ween, released by Elektra Records on June 24, 1997. It is a multigenre concept album with a dark nautical theme, with most songs incorporating psychedelic elements while also featuring a heavy progressive rock influence. According to Dean Ween, "I will say that the only record that I ever felt really confident about was The Mollusk. That's my favorite record we've ever done." 
Electric Six covered the song "Buckingham Green" on their cover-album Mimicry and Memories (2015).
Starting with the release of their 1994 album Chocolate and Cheese, Aaron Freeman and Mickey Melchiondo—known by their stage names Gene and Dean Ween, respectively—began to significantly enhance their approach to studio recording. While their earlier albums were almost entirely recorded by Freeman and Melchiondo themselves at their home using a 4-track recorder, Chocolate and Cheese marked the first time the band produced an album in a professional recording studio. It also notably began their transition from a duo to a more traditional band with the addition of drummer Claude Coleman, allowing Freeman and Melchiondo to experiment with a wider range of musical styles than they could with the drum machine used on previous releases.
Though Ween's 1996 album 12 Golden Country Greats was their first record to feature a full-fledged band on each track, these songs were recorded with various Nashville session musicians and was viewed by the band as more of spin-off album in the vein of The Beach Boys' Christmas Album than a true follow-up to Chocolate and Cheese.The Mollusk was the debut album for keyboardist Glenn McClelland, and with bassist Dave Dreiwitz joining shorty before the album’s release, the band finally evolved into the final five-man incarnation that would remain unchanged until Ween’s break-up in 2012.
After recording 1994's Chocolate and Cheese, Gene and Dean Ween decided they wanted to return to their early method recording albums at home. In 1995, the band relocated their recording equipment to a rented beach house on the shore of Holgate, New Jersey. The band's recording equipment and some of the material were nearly lost when a water pipe burst in the house while the house was unoccupied. At this point, the band put the album on hold and made plans to record 1996's 12 Golden Country Greats in Nashville. After recording 12 Golden Country Greats in 1995 and releasing and touring behind the album the band completed the remaining tracking of The Mollusk at various inland locations. The album was finished in 1996, and released on June 24, 1997.