Judging by this Trailer it looks like we may get water peril in Season 3 (Brief glimpse of Supergirl unconscious underwater at around 0:44)

I second the Kryptonite Necklace/Pool Scene but only if the Actress would be ok with it. Thank you for making this Video, the Actress who is playing Supergirl is beautiful.

I found these pictures of Supergirl underwater drowning on the web earlier today and I've posted pictures. This is a japanese version of Supergirl. I don't think there is a video to it...If there is, post up the link. I know where those pics are from: http://h5n.jp/phantomzone/ There's alot more too.