Thalassia was the home planet of Sheelane and her species. At some point this planet has been destroyed.
Element X could be found on Thalassia prior to its destruction making the element even more rare.
- Sheelane's species
- Sheelane (formerly)
The name Thalassia is derived from the Greek primordial sea goddess, Thalassa. Although there are also traits to the English word "thalassic," which is a descriptor of anything pertaining to (primarily, bodies of) water, such as oceans.