Done completely in Bryce 5. This one was a pleasure at only 60 megabytes or so and actually rendered very fast considering all the lights and reflective water. The Largemouth Bass in the lower right is the same as the one on the left only I imported it into Cinema 4D and polygon by polygon slowly added the bend in his body then reimported him back into Bryce.
I have wanted to do a completely under water scene ever since I did "Bryce Aquarium". While over at Bryce5 dot net I was inspired by an underwater scene I saw there and decided I was ready to give it a whirl!..........Hey This aint no Sphere over Water!
Hope you enjoy it!