Sorry for being so early...
The magic chain: MakeHuman, Blender (Cycles), Gimp.
Two wood textures from cgtextures for the boat, a moonmap from NASA and a rock texture from cgtextures as well. The corresponding normal map was made with the Gimp plugin Insanebump. The normalmap for the fish scales is handmade in blender. The clouds are procedural.
For those who think that this goes too far - having sex with animals is disgusting. Even just thinking about this image in a sexual context is disgusting.
Wash your brain with hot water and iodine!