Kaimū was a small town in the Puna District on Island of Hawaiʻi that was completely destroyed by an eruptive flow of lava from the Kūpaʻianahā vent of the Kīlauea volcano in 1990. In Hawaiian, kai mū means gathering [at the] sea as to watch surfing. The lava flow that destroyed Kaimū and nearby Kalapana erupted from the southeast rift zone of Kīlauea.