I always think ocean is a big, wide water body that is filled with shark, unforgiving waves, tsunamis, ... and human corpses. My associations of oceans and seas are really different lol 😆, I always imagine sea being a fun place to going out to on a vacation. So, my association with the name would be unpleasant.
I picture it as a non-binary name, not a girl and not a boy. But it's more feminine-leaning, I guess. Apart from my association to the ocean, I really like Oceana on a girl!
Greetings from 15 hours ahead!