Mavrine

 is a xenogender that is lively and vibrant, and has heavy ties to marine and oceanic energy, or that ocean and marine life affects one's gender.

Definitions

 * a lively and vibrant gender with heavy ties to marine and oceanic energy - transgalaxies, 2018

History
Mavrine was coined by Tumblr user transgalaxies on January 14th, 2018. The flag was created in the same post.