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.
Solved: Mystery of how sharks can smell a drop of blood from quarter of a mile away. They can smell a drop of blood in the ocean a quarter of a mile away. Now the mystery of exactly how sharks use their astonishing sense of smell to find prey has been solved. Researchers have shown that their noses use 'smell stereo' to detect tiny delays - no more than half a second long - in the time that odours take to reach one nostril compared to the other one.