Are great diving beetles amphibians

no water beetles do not eat tadpoles because i have a little water beetle that swims with tadpoles every day in my dads wheel barrow if u are wondering why i have a tadpole in a wheel barrow its because the pond at the the back of my house dryed up and he/she was iin it so i saved itall the rest are little frogs and the are starting to jump away so theres ur answer they dont eat tadpoles :)