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.
Powerful Sense of Smell. The strongest sense for a shark is their smell. It is a common myth though that sharks can smell blood miles away and then they will find the person or animal that it is coming from. While sharks can smell blood, it often indicates to them that there is wounded prey they can easily overpower. It may surprise you to learn that the nostrils on a shark arenât used for smelling. In fact, they arenât even attached to their mouths. It isnât an instinct of killing that the blood is going to create in them. In fact, if they arenât hungry then they wonât even bother to look for the source of the smell. Some of the species though can smell and indicate even a single drop of blood in the water. This is just an example of how powerful their sense of smell really is.