Sea Crab Morph in Throne & Liberty To unlock the Sea Crab morph, complete For the Ally's Rests, a quest in the Daybreak Shore Exploration Codex: Collect Colleague's Keepsakes and deliver them to the Phanton Ruber at night. Find the Sailor's Keepsakes on the wrecked ship Defeat Sea Crab to obtain the Sailor's Keepsake