Sharks going Extinct!

Sharks have been called "terrors of the deep". With shark dangers off the coasts of the U.S., Japan South Africa, and Australia, marine biologists are rushing to the fishes' defense. but in the recents years these perilous predators have become a popular American entree.Supermarkets and restaurants were initially so hesitant to feature the fearsome fish that they marketed it under such pseudonyms as "flake" and "steakfish."To keep pace with demand, commercial shark catches in the U.S. jumped from less than 500 tons in 1980 to 7,144 tons in 1989. Last year, however, the catch was down an estimated 20%, reflecting diminished populations.