Beuys's depictions of fish and sea creatures are an extension of his lifelong interest in animals. In combining angel and whale, he brings together the heavens and the depth of the sea: an intangible spirit crossed with an enormous mammal. Beuys often turned animals into gods. He wrote: "Animals are in reality also angelic beings. They speak of a realm above human beings, of a spiritual dimension, contained within people themselves". Although the hook shape suggests physical danger for the whale, it may also refer to the ancient tribal custom of attaching fish hooks to the mouth and nostrils of a dead person in order to catch the soul as it escapes from the body.