Kaminadazoan

One of the earliest sessile creatures, Kaminadazoan started their lives on the deep sea vents. Most creature gained energy by passively filtering nutrient from enegy-rich deep sea vents. Others gained their energy via capturing unexpected organisms.

Kaminadazoans were one of the biggest creature at their time, ranging from few centimeters, to about half a meter. All of them have big, single mouth that they use to both eat, remove waste, and reproduce. As a mean of defence, some kaminadazoans gained ability to use toxic sulpher dioxide and hydrogen sulphide, becoming the planet's first poisonous species. These kaminadazoan became toxozoan.

However, toxozoans weren't the only clade. Kaminadazoans diverged and became more and more unique.

It became one of the most common creatures in the deep sea. However, as the planet changed, kaminadazoan were forced to go out towards the shallower waters.

Clade
Toxozoan