This shark had external claspers, a male-specific sexual organ, but also ovaries (red disks) with eggs inside, plus several pups (two shown at arrows). R. Hariprasath.

Cartilaginous fishes, like sharks and rays, are blessed with something called “claspers,” dual sperm-releasing tubes jutting from their pelvic fins. Why ...

Instead of penises, male sharks use two claspers to get sperm into females. And about 15 shark species can have young without males, with females self-fertilizing eggs.

Shark Semaphore. Earlier studies had revealed that three hormones—melatonin, ... For brief periods, "the male's claspers"—a pair of sperm-transferring organs—"are luminous." ...

In males the pelvic claspers, used in mating, glow. The sharks are thought to be primarily nocturnal and solitary, although not much is known about their behavior or lifecycles.

Unlike the claspers of modern sharks and rays that are a part of the paired pelvic fins, the claspers and female basal plates in placoderms were not at all connected to that fin.

(Male sharks perform their part of the mating process with the aid of their two claspers, rod-like appendages of their pelvic fins that are rotated and inserted into the female's cloaca at mating ...

The discovery of seven sharks with both male and female sex organs has one marine researcher convinced “there is something going on with sharks,” according to Science News.

Fishermen in California spotted an extremely rare breed of shark, a pair of megamouth sharks, 30 miles off the San Diego coast. Fox News Media; ... (no visible claspers)," Alisa Schulmman-Janiger, ...

Courtship and procreative behavior in many species of elasmobranchs—cartilaginous fish including rays, sawfish, sharks, and skates—may include following and biting. However, there has been ...