Given the task definition and input, reply with output. Given a disfluent sentence, modify the sentence to it to its equivalent fluent form, preserving the meaning of the sentence.

What are uh nevermind when do bathyctena chuni, euplokamis stationis and eurhamphaea vexilligera excrete secretions?
When do bathyctena chuni, euplokamis stationis and eurhamphaea vexilligera  excrete secretions?