The Cocobarrage depicted will need to be a darker shade of grey to be accurate. Right now, it looks transparent and glassy.
"Like in the": For a caption explanation, omitting "like" at the beginning is appropriate.
I don't think there's any point in the neologism "Saganflora". After all, it's not like any flora from Mason came to Sagan 4, so there's no point in distinguishing it.
I recommend trimming the images to remove white space, or filling out the edges more with color. Some official images do have a watercolor-esque look, but this looks unfinished. (And I still think the Cliff Bristler image looks unfinished.)
You'll need to get rid of the paragraph break between "Habitat" and "Size". The template should be one continuous block. I've noticed other template-separations in your other submissions, too.
Making the first paragraph just one sentence looks awkward. I recommend merging the sentences below it to the first paragraph.
"It is searching" this feels too immediate. I don't think any Sagan 4 organism description uses this, except perhaps for a brief bit of narrative flavor in the Larlap description.
"Lift itself up slightly. Just enough": These sentnces should be merged.
"net. Hanging" this is a similar run-on sentnce problem. "pseudopod's will separate": Pseudopods. This also needs to be merged with the following sentence. I recommend refreshing your knowledge on sentence flows and run-on sentences. Using a sentence checker on a word processor or Grammarly may also help you.
This is your sixth submission this Generation. Since your submissions tend to require a lot of feedback, I recommend focusing on getting your present five non-rejected submissions approved before starting another submission. The one closest to approval (that is, with the fewest problems) is the Bristlekrugg, so I recommend focusing on any problems with that one first.
An easy way to get used to Sagan4's organism submission style without worrying too much about plausibility issues or acceptability is making a fairly ordinary flora or microbe. An easy way to do this is to select two real plants at random and find a way to plausibly merge their traits together. For example, combining a kale plant with a lemon tree could yield an organism submission that's a tropical species with big, edible leaves and sour fruit. (In case one wonders whether a plant can have edible fruit and leaves: moringa trees have human-edible leaves and young seedpods.)
You could also make a fauna not substantially different from its ancestor. Even my own first two submissions, the Jongfoll and the Biplane Tonboswarmer, didn't do anything particularly weird, or differ all that much from their ancestors.