Also light exposure directly manipulates the locomotor activities of larvae throughout circadian period of light and dark with higher locomotor activity in light condition than in dark condition which is very similar as seen in mammals. Following the onset of darkness, larvae shows hyperactive scoot motion prior to a gradual drop off. This behavior could possibly be linked to find a shelter before nightfall. Also larvae can treat this sudden nightfall as under debris and the hyperactivity can be explained as the larvae navigation back to illuminated areas. Prolonged dark period can reduce the light-dark responsiveness of larvae. Following light extinction, larvae execute large angle turns towards the vanished light source, which explains the navigational response of a larva. Acute ethanol exposure reduce visual sensitivity of larvae causing a latency to respond in light and dark period change. See also Microswimmer References Further reading Alexander, R. McNeill (2003) Principles of Animal Locomotion. Princeton University Press. . Videler JJ (1993) Fish Swimming Springer. . Vogel, Steven (1994) Life in Moving Fluid: The Physical Biology of Flow. Princeton University Press. (particularly pp. 115–117 and pp. 207–216 for specific biological examples swimming and flying respectively) Wu, Theodore, Y.-T., Brokaw, Charles J., Brennen, Christopher, Eds. (1975) Swimming and Flying in Nature. Volume 2, Plenum Press. (particularly pp. 615–652 for an in depth look at fish swimming) External links How fish swim: study solves muscle mystery Simulated fish locomotion Basic introduction to the basic principles of biologically inspired swimming robots The biomechanics of swimming Ichthyology Aquatic locomotion Animal locomotion Articles containing video clips