It was great variety for a while - this season they have not had many wraith episodes and now they found one - on the most unexpected place - at the bottom of the ocean of Atlantis. And it was great - all the excitement, when they are blocked out, Teyla is controlled by the wraith... And that one - being able to swim there and not giving up - again one very defiant wraith.
And the ending. The spirit and strength it most have been taken from Teyla to make the plan work - well done.
In overall, very exciting episode. Good one, an motion and action episode.