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.
Sharks are known to have an extremely strong sense of smell for body fluid. However, blood is the most known body fluid that sharks are most attracted to. They can detect even just a small drop of blood from miles away. This amazing theory was proved right when experts conducted an experiment by having a dead fish placed in the water.