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.
The study was the first to find the toxin, BMAA, or Beta-methylamino-L-alanine, in sharks, said the lead author, Deborah C. Mash, a researcher at the University of Miami.hark fins contain high levels of a potent neurotoxin that scientists have linked to neurodegenerative diseases like Alzheimerâs and Parkinsonâs, according to a recent study published in the journal Marine Drugs.