Im not good with English forgive me. And somewhat also new to the game. Been playing only for 2 months.
This has been suggested many times and i think we should have this race before the game end its development journey.
What if a sea race in the game exist that can both dwell in the sea and land. And can build empires in the sea as well.
Like otter race, seal race and mermaid race. They have immunity to wet effect. And their culture is set as sea faring pirates. And their trait is adaptable to sea/water.
Just like underground places (like for the mole people) I think a portal in the sea is possible.
Like I pick an otter race and its starting place is near coastal area and they can passively have boats without the need to research for it. And can build farms and others in the sea with no need to research for it too.
You could add a lot of potential sea theme race like anthro otters, seals, squid/octopuses.
Tl;dr: new race that can be set on sea, can build empires in seas, culture and traits set on sea theme.