<Tr> <Th> 22 </Th> <Td> "American Killers" </Td> <Td> 1 April 2012 </Td> <Td> 21 May 2012 (2012 - 05 - 21) </Td> </Tr> <Tr> <Td_colspan="4"> <P> Featured animals: bull shark, Atlantic tarpon, Atlantic Goliath grouper, alligator gar, longnose gar, American paddlefish, blue catfish, flathead catfish, channel catfish </P> Bull shark Jeremy Wade has travelled all over the world looking for killer freshwater fish . He has been down the Amazon, deep in the heart of Africa, in the murkiest swamps, in the Alaskan subarctic, and everywhere in between . But are there dangerous killers lurking in the lakes and rivers of the United States? Travelling to Florida, Jeremy once again encounters the bull shark, a species known to swim in freshwater, which he has faced before in Australia and South Africa . Bull sharks are believed to have been responsible for the Jersey Shore shark attacks of 1916, which inspired the 1974 novel Jaws . Three of the five attacks that occurred took place in a freshwater river . Following reports of sharks prowling the freshwater canals of Florida, Jeremy once again reels in a monster shark, as well as a little extra . Alligator gar <P> Next, Wade returns to Texas' Trinity River, for a rematch with the alligator gar . In season 1, he had caught a 7 - foot female gar and concluded that the fish had no interest in attacking people . Now, reports have surfaced that gar in Texas are once again reaching lengths of up to 14 feet, the perfect size for a potential killer . Having already experienced their impenetrable armour and razor sharp teeth, Jeremy follows reports of giant gar all over the Trinity, only to find possible evidence of giant gar in a very unexpected place . </P> Then, Jeremy turns his attention to the Lake of the Ozarks, America's 3rd most dangerous lake, to investigate stories of catfish growing to man - eating proportions . Local divers have allegedly witnessed giant catfish and been too scared to dive in the lake again . Jeremy uncovers unbelievable stories of catfish eating already deceased humans, but he wonders if a catfish could ever be big enough or strong enough to kill a person . He finds his answer in Oklahoma, where people catch catfish in a very unusual and dangerous method . </Td> </Tr> <P> Featured animals: bull shark, Atlantic tarpon, Atlantic Goliath grouper, alligator gar, longnose gar, American paddlefish, blue catfish, flathead catfish, channel catfish </P> <P> Next, Wade returns to Texas' Trinity River, for a rematch with the alligator gar . In season 1, he had caught a 7 - foot female gar and concluded that the fish had no interest in attacking people . Now, reports have surfaced that gar in Texas are once again reaching lengths of up to 14 feet, the perfect size for a potential killer . Having already experienced their impenetrable armour and razor sharp teeth, Jeremy follows reports of giant gar all over the Trinity, only to find possible evidence of giant gar in a very unexpected place . </P>

How many seasons of cat fish are there