Oh one more thing! Do any of your ancients still live underwater? Also can they survive in both saltwater and freshwater habitats?

hmmm.... i think i did set it up at some point that the water is technically safer to live in with both the whole oxygen thing in the atmosphere and then the iterators. the rain shouldn't be able to get deep enough to affect them (not to say that they can all handle too far sea depths). now that i think about it there is prolly a branch of their evolutionary line consisting of deep sea "ancients" who still hang out down there, tho these wouldn't end up evolving the whole bipedal body plan. not useful at those depths at all and there is no prompt for it too

the sea anemones that did decide to evolve the bipedal body plan that were originally stationed near the shores are prolly mostly land dwelling and nobody really lives in the seas. mostly cuz the large number of population (and technological evolution like the void fluid revolution) are all on land n upkeepin shit under water like that prolly wouldn't be too fun

they are originally from the saltwater habitat and naturally can survive only in that one! but with the technological advancements that they have plus the fact that their on-land rebreathers are connected to the gills, they should do fine in freshwater too

throw Sparrows into some sea like a beached fish and she's guaranteed to have the time of her life