disposition in the Law topic by Longman Dictionary of Contemporary English | LDOCE | What you need to know about Law: words, phrases and expressions | Law English English English - Japanese English - Korean English - Spanish Japanese - English Spanish - English
Bull sharks have been found up the Mississippi River as far north as Illinois, and one was found 2,500 miles up the Amazon. Lake Nicaragua is full of bull sharks, known locally as Nicaragua sharks. The Zambezi River in Africa is home to many bull sharks, which are called Zambezi sharks there. After Hurricane Katrina, large numbers of bull sharks were reportedly seen swimming in Lake Pontchartrain. Bull shark moms tend to give birth in coastal lagoons, river mouths, and other estuaries.
Currently there are approximately 400 described species of sharks, however new species are being described all the time. In addition, there are around 400 species of rays, a close relative of sharks. Like all living things that humans know about, they are classified by kingdom, phylum, class, order, family, and species. Sharks all belong to the same class, Chondrichthyes, but they are divided into 8 different orders.