Is a squid a nekton?

Yes. They actively swim and catch food, like seals, tuna, whales, sea turtles, sharks...

squids are nekton not bentos or plankton

squid use a kind of jet power. Water is squirted at great pressure out of a nozzle on the squid's body. At times the squid can swim so fast that it may pop out of the water and glide through the air....

For swimming and getting around, and for them, is really very much easier to catch prey with 8 arms that can strangle you like pythons.

you might be able to tell because the GIANT squid is supposed to be largerGiant Squid are actually GIANT.... Therefore if you see a squid & dont say "OMGG that thing is HUGE" then it isnt a GIANT...