Someone who knows better has shown up. I was unfamiliar with pyrosomes, so I googled them. They are another free swimming tunicate, closely related to salps. Because they luminesce, they are sometimes called "fire salps". In the novel, "The Highest Tide", a young kid keeps finding marine organisms that are unfamiliar to the older biologists. I understand how the old biologists feel.
-Curt
![:rawlings: :rawlings:](./../images/smilies/oldtimer.gif)
Happy to be alive.