Earthlings

Various species

Overview

Humanity's brief stint of living on Confibula resulted in them leaving quite a few leftovers. Human farming operations included mostly shellfish and vegetables. Most of them are limited to areas where humans attempted to build colonies, but some have become widespread. Some of these "agricultural runaways" include Mytilus edulis, Portunus pelagicus, Portunus trituberculatus, Chionoecetes opilio, Brassica oleracea, Daucus carota subsp. sativus and Triticum aestivum. (I.e. mussels, crabs, cauliflower, broccoli, cabbage, kale, anything else made from B. oleracea, and carrots)

These are all creatures or plants who don't experience adverse effects from the rolling clouds of toxic gases (including carbon monoxide) that batter Confibula. Many earthly crustaceans use hemocyanin just as confibulans typically do, so they too are immune to it.

Over time, rewilded variants will probably arise from the domesticated vegetables allowed to run loose through Confibula.

Range

These organisms are typically found in the warmer regions of Confibula, due to it being a colder planet overall. Some cold-tolerant species such as the snow crab may be found further away from the equator.

Due to slightly differing biochemistry, many confibulan organisms are poisonous to earthly ones, and vice versa. As a result, most of the surviving earthlings on Confibula live in micro-ecosystems surrounding human ruins where the biodiversity is almost entirely earth-derived, and the vegetables and shellfish feeding one another are the only things keeping each other from getting poisoned. Some other organisms aren't affected by confibulan biochemistry and go about their business eating as many aliens as they please.

Humans?

Humans themselves do not live on Confibula. At least, not anymore. In recent times, a lone human has been spotted wandering around Confibula, but it doesn't seem like it's accompanied by any other humans.