<article> <figure> <img src="http://www.moviesom.com/resources/20150216211140social.jpg" title='Acera, or the Witches' Dance' alt='Acera, or the Witches' Dance'/> </figure> <h1>Acera, or the Witches' Dance</h1> <p>In mud flats along the coast of Brittany we watch acera, small ball-shaped mollusks that are about two inches in diameter. They rest in mud; then, in water, they dance, their skirt-like hood spreading like a dervish's cassock. They spin and spin. The film adds musical accompaniment. We watch them mate and secrete eggs: acera are both male and female, and can form chains with other acera in which they simultaneously mate as a male and as a female. The eggs hatch, and the cycle begins again.</p> <details><summary>Runtime: 13</summary> <summary>Release date: 1972-01-01</summary></details> </article>