Anyway, I'm playing subnautica and it goes something like this. you're traveling in the aurora an interstellar special ship, but due to some event you become stranded on a planet filled with water and I've been discussing with my friend, could we be able to adapt to the environment and maybe become more mermaid like, we also talked like certain adaptation we might have after a few generation nothing big but a few such as being able to hold our breath longer, etc, but could we adapt to the point where we become a mermaid
Yes there is enough fauna and oxygen in the environment to sustain ourselves and oxygen yadayayada.