Shell island treasure chart - Exploring - Arcane Odyssey

I have been struggling with this treasure chart for quite some time now, I just cannot figure out where it might be. Anyone got some tip for this?

Treasure Chart Guide Arcane Odyssey

Treasure Charts, Arcane Odyssey Wiki

Arcane Odyssey How To Obtain & Solve LEGENDARY Treasure Charts

Arcane Odyssey Guide on Treasure Charts & Locations

Guys I need help with this legendary treasure chart I swear I've dug everywhere possible😭can someone figure this out? : r/ArcaneOdyssey

Treasure Charting Guide & Help [V1.14.8] - Arcane Odyssey Guides - Arcane Odyssey

Treasure Chart Guide! [Arcane Odyssey]

How to GET and SOLVE Legendary Treasure Charts in Arcane Odyssey! [ROBLOX]

Treasure Charting Guide & Help [V1.14.8] - Arcane Odyssey Guides - Arcane Odyssey

Treasure Charting Guide & Help [V1.14.8] - Arcane Odyssey Guides - Arcane Odyssey