caption: The image shows a close up of a small insect, likely a nymph, swimming in the water. It is a small, segmented insect with a segmented body and a long, thin antennae. Its body is a light brown color and its legs are a darker brown. Its head is slightly raised above the surface of the water, and its antennae are long and thin. Its eyes are small and black, and it is swimming gracefully through the water's surface.