I really like the abstract nature of this marine biofilm. I've also add a second image of some form of marine larva. I'm sure I've seen images of this organism on this forum but couldn't find them. Olympus 40x S-Plan Achromat, flash DIC.
Linden
The second one looks like one of my Nauplier stage 2 Cyclopoida. I seem to have a whole tank full of them. And they never looked this good in Brightfield.
I also like watching the abstract frames of life when I come upon them.