Blue-green spiral shell

A blue-green spiral shell (shortname: harbourshell) is a vital tool for the littoral infiltrator. Blessed with the oceanic detection ability, the shell informs its listener whether a shipbound adventurer is at sea, or, if moored, what harbour they are currently docked at.

Use:

LISTEN TO SHELL FOR <person>

Pieces:

(1) the spine for a blue-green shell, level 1

(1) the ridges for a blue-green shell, level 1

(1) the material for a blue-green shell, level 1

(1) the song for a blue-green shell, level 1