Jet Snails have an extremely complicated digestive system and excrete into their vestigial shells. Their feces ferment internally and form a dense matter which acts as a compact and highly flammable jet fuel to get them airborne. Most, like the Inkhorn, are gliders, but a few have become decent true fliers.

One species, the Bloodwriter, is surprisingly found in a subterranean environment and has lost flight capability. It uses its jet as a weapon as well as to enable it to leap great distances.

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I didn't want to upload these as they represent actually only 1/3 of the jet snail species, but I've been lazy and they're just sitting around. The two branches not included have mostly either large central fins or impaling wings.

stock - represent (for the paper) .. the eucalyptus leaves are jes plain ole-fashioned google image vomit. Still trying to figure out a better way to fill in the empty space surrounding early creatures on maps like these.

I also used 's tutorial: [link] to learn how to do the paper look, though I did use an entirely different photo editor, so I take partial credit for figuring it out XD