The large sea-cucumber Parastichopus californicus escapes predation by the sunflower seastar Pycnopodia helianthoides. By releasing itself on the approach of the seastar the Parastichopus can be carried away by the current. Also shown are the escape responses of sea urchins and topshells.

See other images of Parasticopus in the Taxonomy

See images of Pycnopodia in the Taxonomy

See images of top shells in the Taxonomy.