Water boatmen are shaped like a flat football and average in length from 1/3”-1/2” maximum. Their oar shaped legs are distinguishing because of their oaring locomotion. Boatmen carry a bubble on their belly. Their body color is a drab brownish black with subtle barring of dirty yellow, brown olive, gray-brown. The belly is a light to dark brown or dirty white to dull yellow.
Snails have a rather unique shell with a retractable body. Their body colors usually match the colorization of the water bottom, with olives, browns, or blackish shells.