Underwater exploration is not a part of the total package in Starfield, and that is probably for the best. Starfield was an ambitious title for Bethesda, and the sheer scale of the game proves that. Players can spend hours upon hours exploring without touching the main story. Of course, longtime fans of Bethesda titles would expect nothing less. However, for all that Starfield strived to reach new horizons, not every potential terrain ended up being explored in the final game. Upon further inspection though, it should be clear why Starfield's did not dive into every possible level design.