An orienteering puzzle game is a really good idea! And doing a 3D game for your first jam is amazing, well done!
The sea of similarities level was my favourite, trying to figure out which island you are next to when everything is so similar and the only differences are the mountains that are so far away that you can't tell how many peaks it has without getting closer and maybe losing your place was fun. The second level was a little too tricky for me - maybe if there was a way for the player to add notes to the map then it would make it a little easier to identify the island of two.
Overall, really good though - just missing some ambient waves and seagull noises to build a little atmosphere.