Stunning! Best picture of one I've seen.

Hi Waldo,
From the speed of it and the plastids, it seems like it could be Myrionecta--a kleptoplastic ciliate.

You'd certainly expect to find ciliates munching on such a meal, but I don't see any cilia on these cells. The spiral covering on the outside looks like the pellicle of euglenids. Unlike Euglena, a few freshwater euglenids lost photosynthesis are are scavengers, such as Astasia. If they moved by a p...

Doesn't seem to have much in the way of mouthparts or antennae. Perhaps it's lost its head and hasn't regenerated it yet?

Cristatella is amazing! it's one of the only mobile colonial animals (besides siphonophores and some salps), where pray tell did you get your hands on them?

Dear Franz, Judging from the tiny cells on the outside, that may be the egg of an ascidian. Sea squirts usually have "test cells" accompanying the egg, which secrete a covering on the larva as it develops. Here are some timelapse videos of test cells and ascidian development. Different species, of c...

Beautiful! It looks like you're building an army.

Fantastic, a haunting image!

Wonderful! Such well defined tissue layers.

I wonder what it would look like through polarized light.

Thanks for your your help, Rik. And Tardigrade, you are right that I had the stains switched--oh the errs of late night posting. It is true that phalloidin and hoechst both represent the binding components molecular tracers, which have two components. Phalloidin, in this case, is coupled to Alexa 44...

Hi! I'm Greg After admiring all of your images through college and into grad school, it seems I owe it to the community to post some photos of my own. This is an echinopluteus larva of Dendraster excentricus, about 400 um long Confocal laser scanning microscopy is a really neat technology that has b...