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.
Nothing to Turn Your Nose Up At. The notion that the mighty great white can smell blood from a great distance has been central to modern shark mythology. Indeed, sharks do possess some of the most amazing olfactory capabilities in the natural world. Smell is so vital to a shark that two-thirds of its brain is devoted to it. They can detect some scents at concentrations as low as 1 part per 25 million, which translates to about a third of a mile away in the open ocean. Sharks smell through a pair of nostril-like holes, called nares, on the undersurface of their snouts.