Sycozoa seiziwadai is a species of is a sea squirt in the family Holozoidae, first described by Takasi Tokioka in 1952.[1]
Sycozoa seiziwadai consists of a colony of colourless zooids in paired vertical rows with the cloaca at the distal end of each pair.
It is found in coastal waters from Queensland, the Northern Territoryto Western Australia, and off the Philippines.[2], in subtidal waters
The species epithet, seiziwadai, honours Seizi Wada, the collector of the type specimen in the Arafura Sea.