Asterophychoidea

Example of red chemoplankton.

Chemoplankton

**Asterophychoidea**

**Asterophychoidea** (lit. "star algae") are a clade of chemoplankton.

## Description

Asterophychoidea is a clade of seafaring chemoplankton that evolved from the floating ancestors of terrestrial plants that never left the large singular ocean of the planet. Since the ancestral chemophytes weren’t rooted into the soil or sediment of the sea floor, they had no way of absorbing nutrients like nitrogen. So, one innovative clade that would become the Asterophychoidea shrunk down to become more energy efficient as well as evolving their roots into long tentacle-like structures lined with sensitive hair-like bristles used to comb the water for microorganisms.

These bristle-like structures could have evolved from micro hairs similar to the ones used by Venus fly traps known as mechanosensors. The bristles may be vibration sensitive and Asterophychoidea could use this adaptation to detect large organisms and act accordingly by slowly curling their roots to avoid them getting damaged.

Asterophychoidea would be able to propel themselves through the water by moving their arms in a similar way to how sea feathers do. This mode of movement may also also help with filter feeding.

## Notes

* Asterophychoidea was based on a fan submission called "Filtrophyte", created by Xavier Sosa, Nathan4dog, Lee the Goat, Henry, Leon Weber, CDBeetle43, and GodzillaFan\_13.

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 † = Extinct