How To Obtain A Treasure Map Unlike some other rare items in Fisch, you can't get a Treasure Map just by purchasing it somewhere.

In this video, I will show How To Get ROD OF THE DEPTHS in Roblox FISCH! 1. Make sure you have at least 750,000 coins, then get a Hexed Enchant Relic and Abyssal Enchant Relic. 2. Get to Vertigo ...

With that out of the way, to complete the Sunken Depths puzzle, you ultimately must swim through an underwater maze and interact with some symbols on the wall.