Crossword clues for Leatherback.:LEATHERBACKLargest living turtleLEATHERBACKLargest of all living turtlesTURTLELeatherback.SEATURTLELeatherbackGIANTSEATURTLESLeatherbacks, colloquiallyLUTHLeatherback turtleTURTLESLeatherbacks.