Just as Bella thinks she's about to drown, her head breaks the surface. BOOOOOOOOOOO. The waves slam her up against some rocks, which doesn't, like, hurt her or cut her in any way. No, no, friends. The rocks basically perform CPR on her, ensuring that all the water in her lungs gets spewed back out. What the shit, Meyer.
An anxious voice orders her to breathe, and Bella gets super sad when she realises that it's Jacob and not Edward.
Marines: Jacob is telling her to breathe but because it's Jacob and not Edward, "I could not obey."