Create a full-length photorealistic image of a lion using the body of a hippo. Retain the lion's head and facial features, while altering the skin to match the hippo's proportions. Design a background that combines elements from the natural habitats of both animals, featuring a blend of savannah and riverbank scenery, with grasslands and water. Ensure the overall composition highlights the unique blend of these two magnificent creatures in a harmonious and realistic environment.
