Once a small port and boat launch, Callville Bay is a derelict no-man’s land overrun by cazadores from their nest inside the corrugated warehouse that has fallen in on itself. There’s a (currently inactive) harpoon winch on the launch itself.
In Captain Dean Boat Rentals on the shelf directly in front of you upon entering is a toy car that merely says Take. However you cannot take it and picking it up causes a message to say "Good! Now press RS(RS3 for PS3) again to let go of the skull." If playing on the PC version, the message will read "press Z to let go".
The warning on the tow winch is written in French. It translates as "Danger of death: High-tension cables. Distance: 0 m. 00. Depth: 0' 60".