Bonus: my personal headcanon is that he "sees" the Downfall from the Meneltarma, perspective-wise, and has thus seen Tar-Míriel die many, many times. So he actually has a much clearer sense of what Míriel looked like than what Finduilas did (though Finduilas's death is also linked to the sea ... and Faramir also has a vision of Boromir being carried out to the sea ...)