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www.reference.com/article/sharks-mate-ba2473194124da9f

When sharks mate, the male grabs the head of the female with his teeth and inserts pelvic fins called "claspers" into her reproductive area. The male has sacs that are filled with seawater that help to shoot his sperm through the female to ensure reproduction. The two sharks stop swimming and have t

www.reference.com/article/sharks-16322f82683f010

Sharks are fish, but unlike other fish, their skeletons are made of cartilage rather than bone, and instead of smooth, flat scales they have sharp, tooth-like scales called denticles. Scientists believe that sharks are 200 million years older than the oldest dinosaur, meaning they have been around f

www.reference.com/article/amazing-sharks-9eb95f7f421f6f5a

An amazing fact about sharks is that the skins of females are much thicker than that of males. This is because male sharks tend to bite the females during mating. In its lifetime, a shark can go through about 30,000 teeth.

www.reference.com/article/fun-sharks-74df813027a2ee32

Some fun shark facts include that they have no bones, they have skin like sandpaper, have extraordinary sensory skills and teeth that are constantly being replaced. Most sharks never stop swimming and some species give birth to live young, called pups.

www.reference.com/article/sharks-fish-9831568962c46794

Sharks are fish, but they belong to the group called Chondrichthyes, or cartilaginous fish, which is a different scientific group than most types of fish. Common fish, such as tuna or salmon, all belong to the group Osteichthyes. The distinction is based upon the makeup of their skeletons.

www.reference.com/article/fish-mate-6b87a1fbb5467ae7

The majority of fish reproduce by spawning, a process in which the female and male fish release eggs and sperm simultaneously in a protected environment with or without a complex courting ritual. Some spawners build nests to guard the fertilized eggs.

www.reference.com/article/interesting-blue-sharks-a6285caea4c2aea

Blue sharks are known for their distinct coloring, which allows them to blend in with ocean water. From above, the water appears darker and camouflages the shark's dark blue back, while its white underside resembles the sunlit ocean surface when seen from below. As a pelagic species, blue sharks inh

www.reference.com/article/dogs-mate-5d73aace5a70518c

The male dog mounts the female from behind and inserts his penis. The penis then swells and locks into the female's vagina. The process typically lasts somewhere between five and 20 minutes.

www.reference.com/pets-animals/shark-mammal-10c6bb99a876400f

A shark is not considered a mammal. Sharks are considered members of the paraphyletic group of organisms that contain gills, or in other words, fish.

www.reference.com/article/humans-mate-db63d3d07447a602

According to David M. Buss of the University of Texas at Austin, humans depend on several successful strategies for mating, which they inherited from their ancestors. These strategies include: long-term, short-term and extra-pair mating. However, each sex has different mating strategies including th