Monotypic tunicate genera

Nephtheis fascicularis, commonly called the lollipop tunicate, lollipop coral, or blue palm coral, is a species of tunicate that is native to the shallow reefs of Indonesia. It is the only species in its genus Nephtheis. They are not photosynthetic, and live on plankton and small organic particles obtained from the water currents. The branched stems are formed by tiny polyps called zooids. Despite their name and appearance, they and other sea squirts are unrelated to true corals.

Soestia is a monotypic genus of tunicates belonging to the family Salpidae. The genus was described by Patricia Kott in 1998. The only species is Soestia zonaria, which was first described in 1774 by Peter Simon Pallas as Holothurium zonarium.

Gynandrocarpa is a genus of ascidian tunicates in the family Styelidae.

Claudenus is a genus of ascidian tunicates in the family Pyuridae.