kossakowski_koncert_morski_kantora_msn_6409828
A man conducted waves in 1967 as part of the “Panoramic Sea Happening,” which Polish artist Tadeusz Kantor created on the Baltic coast. A Bolinas artist is planning to recreate the event.    © Anka Ptaszkowska. Courtesy of Museum Of Modern Art, Warsaw

A man stands on a podium submerged in the ocean, conducting the sound of the waves and the wind; beachgoers pose on a shipwrecked raft, re-creating a famous French painting; people plant newspapers in the sand or engage in a mud fight in bathing suits. Who are the participants and who are the artists—and what does it . . .