Description: English: A tunicate - these animals are closely related to vertebrates. They are called hemi-chordates. Federated States of Micronesia, Chuuk. Date: September 2006. Source: NOAA Photo Library: reef0601. Author: Dr. Dwayne Meadows, NOAA/NMFS/OPR.
Description: Español: Polycarpa pigmentata en isla Lizard mostrando el revestimiento azul de los sifones. Ancho de unos 7 cm. Español: Polycarpa pigmentata at Lizard Island showing blue siphon lining. Width about 7 cm. Date: 17 March 2013, 11:18:30. Source: http://lifg.australianmuseum.net.au/HotShot.html?resourceId=2h07TKF3. Author: Anne Hoggett.