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.
This way, the amount of urea in a sharkâs blood can reach 2.5%, while it is only about 0.01-0.03% in other vertebrates. This way, the sharks are isotonic as compared to sea water, i.e. the ion concentration of sea water and the sharksâ tissue is balanced.