The term "dorsal side" refers to the back or upper surface of an organism. In animals, this is typically the side that faces away from the ground when they are in a natural position. For example, in fish, the dorsal side is where the dorsal fin is located, which helps with stability while swimming. In humans and many other vertebrates, the dorsal side corresponds to the back of the body. This includes the spine and shoulder blades. Understanding the dorsal side is important in fields like anatomy and biology, as it helps in identifying and describing the structure and function of various organisms.