Green Sea 

"Green Sea" is a drawing by M.C. Escher, known for his exploration of perspective and illusion. The artwork depicts a dark, mysterious sea with a lone, rocky outcrop in the foreground. The drawing utilizes contrasting tones of white and black, highlighting the texture of the rocks and the depth of the water. This work showcases Escher's fascination with the natural world and his ability to depict its beauty through simplified forms.