[sometimes]

I have an opportunity (at the moment) to consider putting a pond in the garden, as I will have a quanity of subsoil/soil from building a soakaway. At the moment I'm considering something that will be partly raised, with the soil around it sloping away to a lawn/hedge/flower border. It's primarly purpose will be to support local wildlife (ie not a fishpond) - (though I'm not keen on the thought of mossies). I am keen on having some areas of very shallow water, for birds/mammals to bathe/drink. I presume I will need an area within the pond that is quite deep to provide some chance of none frozen water for any amphibians that might find their way in. Anyway, to cut to the chase, does anyone know of a preformed pond manufacturer who provides ponds with a very shallow area - maybe a tapering off to nothing? I've seen plenty of ponds with 'shallows' but they're too deep for my purposes (ultimately I'll be using it for photographing visitors.
Thanks - At this stage, the shallow bit is the only thing I'm concerned about -the technicals of putting a good pond together can come later.