i like the idea of walking on water. there is something mythological about being able to overcome water in a such a calm fashion. water is ever present, a necessity in life but we all know it's wrath. it is unpredictable, it causes chaos in excess or when scarce, it washes away entire cities at a time. our bodies are over 80% water and yet we can drown in only a few inches of it.
there is something to be said about walking on water instead of running or dancing or floating over it. it shows passive control over the uncontrollable.
jesus and tiger woods both did it (google it). and some lizards. and boats do it...sort of.
on the other hand, working within water is symbolic of a different approach to life. if walking on water is to dominate, however passively, breathing underneath or hiding under water show an acceptance of circumstance. its like being ideological or being realistic. sure, the first would be great, but the latter will likely serve me better.