Included below are more detailed maps of Thalassa indicating major locations in the book. The illustrations were made by Sheryl Chieng.
Spoiler Alert: the names of some locations may provide premature information about the plot and are best viewed after the book is completed.
An overview map of Thalassa
The Slab: the first surf spot
Colossus & the Bulge
Sage’s Islands: crossing over & Home Island
River and Ruins
North Cave and subsequent travels
Songs of Thalassa 