Wow, look at these guys, saying about the whole "did you think you could carry on." Let me spell it out for you, babies.
I THOUGHT THERE MIGHT BE SOMETHING MORE IMMERSIVE AND INTERESTING THAN AN UNREALISTIC INVISIBLE WALL.
Herp a derp derp, people, seriously.
A giant shark is immersive???
If an invisible wall, at the edge of the map, which is the BORDER of the nation infringes on your immersion, that's your issue, not the game's.