I haven't gone to a movie in years. I haven't seen any superhero movies.
With CGI, I can imagine underwater sequences could look spectacular.
And I'm sure his superpowers will be expanded.
Geek mode - ON! I would guess that a man who could withstand the pressures of the deepest ocean and also move swiftly through water at all times would be ridiculously strong and almost invulnerable on the surface. At least invulnerable from blunt forces. So really strong and tough as nails. Just a guess though.