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.
Their sense of smell is certainly better than a bloodhoundâs and, quite possibly, is the best of any land animal. Two-thirds of a sharkâs brain is dedicated to smell and it can detect the tiniest drop of blood from more than a mile away. Astonishingly even uninjured fish are not safe from a sharkâs surveillance.