Stomatopod visual systems are known to be one of the most intricate in the animal kingdom. Their stalked eyes move independently and have multiple spectral and polarization channels. The complex retina responsible for these abilities is only formed during the last phase of larval development during which time the larval retina is lost. It was previously assumed that the eyes of larval stomatopods are simpler than their adult counterparts, however it appears that simpler for a stomatopod can still be remarkably complex. Using transcriptomic analyses, we have determined the opsin proteins which are expressed at larval, post larval (transitional), and adult developmental stages of Gonodactylaceus falcatus, a widely distributed tropical and subtropical species. Our data suggests that larval G. falcatus may not express a full adult repertoire of opsins at high levels but they do express ultraviolet sensitive opsins at levels consistent with use in vision. The ability to perceive ultraviolet light was previously associated with adult stomatopods only and is known to be used in aggressive or mate-finding interactions. The ecological purpose of ultraviolet light perception in larvae is less clear. A potential role for ultraviolet light perception as a depth guide in daily vertical migration has been suggested but not previously tested in marine crustaceans. Opsin expression at each developmental stage of G. falcatus will be compared and evidence for the utility of ultraviolet sensitive opsin expression in larval stages will be discussed. Ongoing work will seek to characterize the response of these larvae to changes in ultraviolet light conditions throughout a daily light cycle.