[Karlmarks]

Here's the rule, and yes, Bear is right. Nice call!

26-2b. Ball Lost or Unplayable Outside Hazard or Out of Bounds
If a ball played from within a water hazard is lost or deemed unplayable
outside the hazard or is out of bounds, the player may, after taking a penalty
of one stroke under Rule 27-1 or 28a:
(i) play a ball as nearly as possible at the spot in the hazard from which the
original ball was last played (see Rule 20-5); or
(ii) proceed under Rule 26-1b, or if applicable Rule 26-1c, adding the
additional penalty of one stroke prescribed by the Rule and using as the
reference point the point where the original ball last crossed the margin
of the hazard before it came to rest in the hazard; or
(iii) add an additional penalty of one stroke and play a ball as nearly as
possible at the spot from which the last stroke from outside a water
hazard was made (see Rule 20-5).
Note 1: When proceeding under Rule 26-2b, the player is not required to
drop a ball under Rule 27-1 or 28a. If he does drop a ball, he is not required
to play it. He may alternatively proceed under Rule 26-2b(ii) or (iii).
Note 2: If a ball played from within a water hazard is deemed unplayable
outside the hazard, nothing in Rule 26-2b precludes the player from
proceeding under Rule 28b or c.
PENALTY FOR BREACH OF RULE:
Match play – Loss of hole; Stroke play – Two strokes.