Attached Link: http://gozips.uakron.edu/~dab10/

Two solutions. First, try either upping the whales' diffuse and ambient channels (first, set the ambient to use same tex as the diffues, if there is any). Second, you could add a few diffuse lights preferably w/ squared or ranged falloff to the scene by the whales. Either should do fine, but will give you different results. P.S. If you're in Bryce4...you can alt+click-and-drag (pretty sure that's right) in the light preview window to set the radius for the ranged falloff light.