Water

The local Wiccan circle had a meditation last night on water.  I find myself in the unusual position of being able to speak with some authority on the subject.

The main correspondences are clear to anyone who's studied for a decent amount of time.  The Moon, Venus, Neptune.  Cancer, Scorpio, Pisces.  Moonstone, aquamarine, opal, obsidian, silver and quicksilver.  Willow, yew, rosemary, lilies of all kinds.  Animals that live on or near the water: that's a pretty wide variety from dolphins to dragonflies.  Ocean magick, river magick, wishing wells and mirrors.

What could water magick be used for, though?