From Monkey Island wiki
The "Jerkbait Islands" as depicted in Tales of Monkey Island
. Clockwise from the top: Roe Island, Spinner Cay, Spoon Isle.
Roe Island is one of three islands that make up the Jerkbait Islands, the other two being Spinner Cay and Spoon Isle. The Jerkbait Islands are located in the Gulf of Melange.
Coronado De Cava had a small shack on Roe Island, from which he conducted his search for La Esponja Grande until he disappeared. The shack is still around when Guybrush Threepwood begins his search for the sponge many years later.