TEPCO's "Photo for Press" Page has the videos of Spent Fuel Pools for Reactors 3 and 4 at Fukushima I Nuke Plant. The video for Reactor 3 Spent Fuel Pool was taken on May 8 according to TEPCO. The video for Reactor 4 Spent Fuel Pool was uploaded to TEPCO's site on May 8 early morning, so it could have been taken on May 7.
The Spent Fuel Pool of Reactor 3 looks like a shipwreck. Let me know if you see a fuel rod in the Pool.
TEPCO also did the analysis of the water in Reactor 3 SFP:
Reactor 4 Spent Fuel Pool: