ID help with cyst on stalk

[Bschnitzer]

The interior slowly undulates around like the Alien face-hugger in its pod. Any ideas?

Thanks,

Bob

https://drive.google.com/file/d/1u4fZvb ... sp=sharing

Olympus BH2-BHTU
USB3 Risingcam 20mp stacked from just 2 images
Post processed in Topaz, Photoshop, DXO

[Bschnitzer]

Here is the video.

https://youtu.be/bdFE4lEhv54

[Bruce Taylor]

This is the stalked egg capsule of a microscopic flatworm (so, an animal, not a protozoan! ). The faint line around the top marks the operculum, which will open like a lid when the worm hatches from the egg.

[Bschnitzer]

Thanks, Bruce. I suspected a flatworm when I saw the two eyespots, but was thrown by the cluster of “balls” inside.

Cheers,

Bob