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.
Is it true that white sharks can smell a drop of human blood from 100km away? As a cage diving operator, we wish it were true! If that were the case, we could save a lot of money by not having to buy chum products, but this simply is not true. We chum white sharks using highly concentrated oils from fish.