Wulguru cuspidata is a microscopic acoel species that lives in the sandy beaches of northern Queensland (Australia).
[1][2] Wulguru cuspidata individuals are colored green due to the presence of zoochlorellae of the order Chlamydomonadales.
When hatched, juveniles of this species are colorless but they quickly turn green as symbiotic microalgae enter their bodies.
[1] The mouth is mid-ventral, although it is not known whether they are able to feed independently or gain nourishment solely from the symbiotic algae.
[1] Wulguru cuspidata lives in intertidal zones of open sandy beaches in northern Queensland (Australia).