A land planarian, coiled up and with some sort of greenish-white fluid either on it or coming out of it. Might it be some sort of disease?
under coastal driftwood
This land planarian was being eaten alive by these ants. I probably scared them off when I turned over the rock, though. I think the white patches are where it was eaten by the ants.
The observation for the ants is https://www.inaturalist.org/observations/2019094 .
Flatworm on kelp in Santa monica. It is the small dark line segment near the middle of the first frame, progressing downward. Note different positions relative to kelp's ridges- pictures were taken seconds apart.
Flatworm on kelp (note different positions in images taken seconds apart) in Santa Monica. It is the small dark object near the center of each frame.
The flatworms, known in scientific literature as Platyhelminthes or Plathelminthes (from the Greek πλατύ, platy, meaning "flat" and ἕλμινς (root: ἑλμινθ-), helminth-, meaning worm) are a phylum of relatively simple bilaterian, unsegmented, soft-bodied invertebrate animals. Unlike other bilaterians, they have no body cavity, and no specialized circulatory and respiratory organs, which restricts them to having flattened shapes that allow oxygen and nutrients to pass through their bodies by diffusion. The digestive cavity has only one opening...