Bergen Akvariet January 2012
This is taken from the entrance to the shark tunnel, and shows the entire tunnel. And it looks bigger in the photo than it did in real life. Its more of a "shark doorway" really. The entire tank was probably 2.5m by 4m, with a depth of 1.5-2m. The tunnel went through the tank on an angle, so might have been 3m long. As well as varius reef fish, there were 4-5 small sharks.