Molluscs

Molluscs comprise a diverse group of species that have evolved symbiotically alongside each other in the vast oceans of their world. Over millions of years, they transitioned from aquatic life to living on dry land, with some relatively recent adaptations leading to a return to the sea. Despite their distant genetic relationships, these species share similar physical characteristics and consider themselves one singular species.

Gastipoids - (Land bound)

In the ancient past, Molluscs existed as a singular ocean-dwelling species. They coevolved with a unique Cyanophyta species, residing on their gills and producing oxygen, enabling them to venture onto land for extended periods. Over time, these two species evolved into modern Gastipoids, capable of permanent land residence. However, they lost the ability to breathe underwater, relying on vestigial gills and a permanent Cyanophyta presence within their respiro-biome for oxygen.

Nautiloids - (Water bound)

Nautiloids represent a more recent offshoot of Molluscs that returned to life in the sea. The Cyanophyta in their respiro-biome adapted to reside within their water-filled shells for protection, requiring a constant source of circulating saltwater to convert carbon dioxide into oxygen. This is in contrast to their land-dwelling cousins, who rely on light for this process.