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 push (grab button) again to let go of the skull."
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".