The image shows a close-up of a sea slug on the bottom of the ocean floor. The sea slug is long and slender, with a spiral-like body and a pointed head. It appears to be crawling on the sandy surface of the water, which is covered in small rocks and pebbles. The background is blurred, but it seems to be an underwater environment with coral and other marine life visible. The image is taken from a low angle, looking up at the sea slug.