1 Angina Pectoris: It is described as a pain located at the back of the breast bone which may be sharp or dull. This sensation may radiate or crawl to the hand, arm, left shoulder, or jaw.  Vasculitis: When the small to medium sized arteries are inflamed, head tingling and numbness may result.
Most species of shark eat things like fish, crustaceans, mollusks, plankton, krill, marine mammals and other sharks. Sharks also have a very acute sense of smell that allows them to detect blood in the water from miles away.
All sharks mate through internal fertilization. The male inserts one or both of his claspers into the female's reproductive tract and deposits sperm. During this time, the male may use his teeth to hold on to the female, so many females hvae scars and wounds from mating.