Swimming with dolphins?

Hey i'm taking my best friend to Japan for her birthday next year. One thing i know is she loves dolphins and i realy wanted to do something special for her while we are in Japan. So i was wondering if anyone knows if any of the aquariums in Japan have something where you can go swimming with the dolphins like you see in hawaii and the bahamas and such.

There are several aquariums where it seems to be possible to swim with the dolphin (and even more where you can just touch them).

Here is a list of some:
http://www.shimoda-aquarium.com/touch/touch-snorkeling.html
http://www.enosui.com/english.pdf
http://www.kamogawa-seaworld.jp/english/index.html
http://www.hiyoriyama.co.jp/

And the list of all aquariums with dolphins:
http://www.dolphindive.jp/meet/