It used to be called Keywest Dolphin Fest but now is Blue Horizons. I've heard it is very good, although the old one was pretty spectacular so they'd have to go a long way to beat it.
It's much better than the previous show.
There is more happening.
If you'd like to see some pictures taken with my wide angle lens, try my page here and scroll down. http://www.nogodforme.com/IOA072905.htm