 Newly born daggernose sharks measure in length.Males mature at long, corresponding to an age of 5–6 years, while females mature at long, corresponding to an age of 6–7 years.The lifespan of males has been measured at up to 7 years, and females 12 years; extrapolating from growth rates suggest that the largest known males and females may be 12 and 20 years old respectively.