Simplify the following text for a Grade 11 native English-speaking person.
Original: There are only two surviving species , the Gharial ( Gavialis gangeticus ) and the False Gharial ( Tomistoma schlegelii ) , which are each the sole living representatives of the two Gavialidae genera .
Simplified: Gavialidae consists of only one surviving species , the gharial ( Gavialis gangeticus ) , which is native to India .