Cwis – more algae

You’ve seen a thin-fronded algae floating in a rockpool. It has what looks like seed pods dotted along the frond. It is:

I am a short algae, with fronds which branch in two equally and I’m deep brown-red in colour. I am False Irish moss, but what other feature(s) do you look for to confirm me and not irish moss?

Drag the species name to the appropriate picture