Even more worms on my glass.

[ptychoptera]

The first worm looked a bit different from the usual Branchiomma on my glass. Size was around 4mm. Is it just Branchiomma growing a new duster and a bit contracted maybe?

The little flatwormy guy I only noticed while shooting the bigger worm. I don't expect any kind of identification on it, just thought it looked like an interesting creature with its irregular body shape. Size on the little guy was 1mm.

 

[LeslieH]

Lovely, always happy to see more worms.

I believe you're right about the first one. It's a small Branchiomma. Not only is the crown growing (or regrowing) the posterior region of the body is regenerating as well. Some of the small sabellids undergo asexual reproduction by splitting off part of their bodies.

The second is also a polychaete. See the dark area in the middle right behind the eyes? Those are jaws. This is in the family Dorvilleidae. Years ago all the tiny dorvies were in the genus Ophryotrocha but they're now split among 20 or so different genera. As one of the crucial details is the structure of the jaws - and I hate trying to figure them out - let's just leave this at the family level.