very good game, kept me going to the end for a couple of times! the "mission" screen was kinda difficult to understand at first, so i had to open/close it 3-4 times until i figured it out. i would suggest something like moving it to the side or making it a bit transparent so that the player can see the ui at the same time.
all in all great job though, i had a lot of fun and found it very charming!
edit: ah, also i had a lighthouse spirte sticking around even after i used the sea card, i read in another post something similar about a burger. well it happens to lighthouses too :P