 When a large sample of Pacific Sharpnose Sharks were observed scientists concluded that this type of shark was a “viviparous shark of small size which is born at an average length of 31 cm.” Their gestation period is between ten and eleven months.There was found to be no statistical relationship between the number of embryos to the average length.The sex ratio is one to one with the average number of embryos per female being around 7.4.