Sharing some info , hope you dont mind

Appears out of 'bestowed' object or painting

floating on ceiling face down, looking at you - resemblance of poltergeist gesture

wears dark coloured gown / sari

dark mist / fog pre-appearance (never white mist)

wears some sort of tiara or crown

looks of human face with the exception of the 'fishy / alien' look

so there's supernatural life in the seas , after all

;- chuckle