Islets are the main exploration content of Starsea Voyages. They are instanced zones, typically focusing on a specific Creature type, Item, or will feature a puzzle that can be completed for extra rewards.
Each Islet will initially be Unknown, notated with a " ? " icon, however upon exploring an Islet, its name and core type will be revealed, and can be returned to at a later date.
When visiting an islet for the first time, it is possible for players to come across an "Encounter", which can either be a new Neighbor to be invited, or an already-invited Neighbor, who will offer a reward once spoken to. After leaving an encounter, players can visit the islet again to reveal a permanent resource islet.