Lake Nicaragua or Cocibolca or Granada is a freshwater lake in Nicaragua. Of tectonic origin and with an area of 8,264 km2 (3,191 sq mi), it is the largest lake in Central America, the 19th largest lake in the world (by area) and the tenth largest in the Americas, slightly smaller than Lake Titicaca.

With an elevation of 32.7 metres (107 ft) above sea level, the lake reaches a depth of 26 metres (85 ft). It is intermittently joined by the Tipitapa River to Lake Managua.

Lake Nicaragua, despite being a freshwater lake, has sawfish, tarpon, and sharks. Initially, scientists thought the sharks in the lake belonged to an endemic species, the Lake Nicaragua shark (Carcharhinus nicaraguensis). 

In 1961, following comparisons of specimens, it was synonymized with the widespread bull shark (C. leucas), a species also known for entering freshwater elsewhere around the world. 

It had been presumed that the sharks were trapped within the lake, but this was found to be incorrect in the late 1960s, when it was discovered that they were able to jump along the rapids of the San Juan River (which connects Lake Nicaragua and the Caribbean Sea), almost like salmon.

According to en.wikipedia