Some larval sponges search for a shady place to settle down, but they don’t have optic nerves or the genes that are important for vision in most animals. Now biologists have new insight into how sponges might see light.
Some larval sponges search for a shady place to settle down, but they don’t have optic nerves or the genes that are important for vision in most animals. Now biologists have new insight into how sponges might see light.