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.
Shark Eyesight. Sharks have such keen senses that enable them to detect even small amounts of electric current or vibrations (electroreception) and chemical changes in the water (chemoreception). These senses are so acutely specialized that it was assumed that they overcompensate for sharksâ poor vision.