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Do Sharks Lay Eggs or Give Birth to Their Young Alive?

According to about.com, sharks have a variety of reproductive strategies, which can be divided into two main groups - those that lay eggs (oviparity), and those that give birth to their young alive (viviparity). All sharks mate through internal fertilization. The male inserts one or both of his claspers (comparable in function to a penis in [...]

What are the Differences Between Male and Female Sharks?

Male and female of any species of living things would normally have clearly different anatomies. As regards sharks, what are some of these differences? Distinguishing the sex of a shark is easier than in most marine species. It's all in the shark's external anatomy. Male sharks have modified pelvic fins called claspers, while females do [...]