So i was just rewatching this episode, and even though this question might not technically belong here, i consider the orville a spiritual and honorary star trek. Definitely more so than enterprise or discovery, although i enjoyed both of those, they just dont embody as much of what i consider star trek to be as the orville does. Anyway i have a sort of random physics question that i hoped someone might be able to answer, although spoilers follow below. (Im not sure how to spoiler tag and my client doesn’t have a shortcut for it that i can see so apologies)

At one point in the episode they are trying to retrieve a spaceship from the bottom of the Marianas trench, and take a shuttle down. Throughout the descent the shuttle seems to be struggling witj tjr pressure, and they make it into the shuttle bay of the ship in the nick of time. The shuttle bay is flooded and begins to pressurize but as it does the shuttle continues creaking and shaking until the water level reaches the roof of the shuttle. So it made me wonder, as the bay is pressurizing, would the water pressure remain constant? Or likely increase significantly as the water is having to be displaced/forced out somewhere? Or as fhe volume of water in the bay decreases would the pressure also decrease?