These two little bowls were turned from a single smaller diameter log cut from the thin end of the driftwood log–past the end of that small branch shown here:
The piece cut off:
(FYI: The axis of the little log was perpendicular to the axis of roatation)
After turning into a near sphere, tenons were cut into each side and then the "sphere" was cut in half: It is shown here after cutting it in half with a parting tool.
Each little bowl was turned to remove the material from the inside of the bowl and then each half was reverse mounted in the cole chuck:
The tenon was removed and the bottom finished off:
This resulted in the two salt cellars: