This is easily one of the greatest movies about sharks attacking arctic research centers ever made. I mean, there are lines such as "Don't die" to which the long-hair responds "Okay." And who can forget this gem: "You know I love you, right?" "Pretty much, yeah."
Aside from the terrific writing, and Oscar worthy delivery of those lines, there are the abundant inconsistencies. These folks are under and arctic shelf, swimming around with sharks, but it looks like they're in the tropics. Tons of tropical fish abound. Love it.
So many ways they could have escaped, and they go for the dumbest, most illogical thing you can think of. They definitely MacGyvered the hell out of this one. Really solid flick if you love stupid C movies.