Anna and water

After talking so much about water imagery in class today, I turned back in the novel to examine some passages more closely.  The passage where Anna first thinks that she may be pregnant (p. 162) has her crawling into her bed, her boat of safety if you will, with everything "still heaving up and down."  Granted, the heaving is referring to vomit, but I can't help but see the wave imagery found in heaving.  The dream that she has on pages 162-163 is told in a stream of consciousness style punctuated on by dashes - many dashes.  When reading this dream, one feels the rhythm of the waves rocking, heaving, back and forth.  The dream comes from Anna's childhood, and it is clear that she is trying to escape her current English life through both sleep and dreaming.  Alas, Anna wakes up and everything is still heaving.
In a way, Anna is like water.  She is fluid, always moving from one place to another.  She is frequently described to be  ice cold, and her eyes are described as dull and drugged much like  a puddle of stagnant water appears.  Like the sea, Anna is trapped in one area, can be rough or calm, but largely remains unchangeable in her state.  The sea does not choose to be choppy or smooth (which is slightly different from Anna because I do not believe she is without agency), but rather is influenced by outside events much as Anna is influenced by Maudie, Laurie, Ethel, etc.
And you all thought we finished discussing waves when our time with Virginia ended....