Numerous hypotheses have been proposed and tested concerning the purpose of schooling behavior in fish. Schooling certainly promotes the survival of the species, but questions arise as to the way the schooling enables fish to have a better chance of surviving. Certainly, the fact that fish congregate together in schools helps to ensure their survival in that schooling provides numerous types of protection for the members of the school. One form of protection derives from the sheer numbers in the school, when a predator attacks a school containing a huge number of fish, the predator will be able to consume only a small percentage of the school. Whereas some of the members of the school will be lost to the predator, the majority of the school will be able to survive. Another form of protection comes from the special coloration and markings of different types of fish. Certain types of coloration or markings such as stripes or patterns in vibrant and shiny colors create a visual effect when huge numbers of the fish are clustered together, making it more difficult for a potential predator to focus on specific members of the school. A final form of protection comes from a special sense that fish possess, a sense that is enhanced when fish swim in school. This special sense is related to a set of lateral line organs that consist of rows of pores leading to fluid-filled canals. These organs are sensitive to minute vibrations in the water. The thousands of sets of those special organs in a school of fish together can prove very effective in warning the school about an approaching threat.