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.
Just after a while, a great number of sharks appeared because of the dead fishâs blood. They never moved the carcass to attract attention, but amazingly, the sharks could be able to smell the blood from a distance and be able to locate where it is exactly coming from.