The dolphin auditory system is extremely complex as well as sensitive. Because of this, noise pollution is a large problem for aquatic mammals. Noise pollution comes from human made technology such as ships, fracking, and missiles. Noise pollution is known to have a negative effect on the livelihoods of marine life. In the dolphin brain, there is a nucleus called the Ventral Cochlear Nucleus (VCN) which is associated with hearing in dolphins. There is little known about the auditory nuclei of dolphins, and with the growing problem of noise pollution, finding out information about the anatomy of dolphins that is directly related to noise pollution is extremely important. There are several different types of neurons in the VCN that can be identified by their morphology. Such as octopus neurons, multipolar neurons, globular neurons, giant neurons, and glial cells. I propose to look at the number and types of neurons in the ventral cochlear nucleus of the striped dolphin (stenella coeruleoalba). In this study, nissl (a purple dye used when identifying neuronal structures) stained slides of the striped dolphin brain will be looked at and examined using an Axiophot microscope. The number of the different types of neurons previously mentioned will be recorded and then quantified using grids generated by computer software (stereo investigator) connected to the microscope. This study is designed to identify and quantify the different auditory neurons in the VCN of the striped dolphin and compare the findings of this study to similar studies on the bottlenose dolphin.