no way daleks are usually kept the same for tradition
Series 2, Ep13 - "The Daleks have no concept of elegance!"
Thay appears identical to other Daleks.
a shell
If you take a rope and coil it up on a flat table, you will get the basic idea of what a coiled shell looks like. Or, you could look at a cinnamon roll which is the culinary equivalent of a coiled shell. I'm going to let you decide....does a lobster look like a cinnamon roll?
The daleks were created by terry nation and were based on the Nazis, because when he was a child he was in the 2nd world war and that's why the daleks speak in a demanding high pitch squeal. i got this information from a 1980s dr who DVD.The daleks are hideous mutants hidden behind armour called Dalekanium.They were created by davros but some were created by The Dalek Emperor.They were meant to be destroyed in the time war but they keep coming back. In Victory of the Daleks,the Daleks pretended to be on Winston Churchill's side in World War 2 but were actually waiting for a "testinomy" from the Doctor.When the Doctor arrived and the Daleks got their testinomy,it confirmed they were Daleks to the proginetor(which didn't recognise them,because they were impure).The proginetor created a new race of pure Daleks.The new Daleks escaped and by doing so,claimed Victory,hence the episode title "Victory of the Daleks".Later,the Daleks ended up being part of a pandorica alliance,in The Pandorica Opens/the Big Bang.The pandorica Alliance succeeded in trapping the Doctor in the Pandorica.Later,the Dalek was brought to life by light from the Pandorica.For some unexplained reason,though,it was scared of River Song.
look in the shell
Like a delicate sea shell, or a snail shell I guess.
the look like this
yes they do iit might not look like it but it is.
Could be many things. Part of maker's name, part of ammo name, etc.
To make a shell, you could take large bowl and paper mache over it. Then once it hardens, you can paint it to look like a shell. If you are able to sew, you can use some felt and sew the pieces together and stuff the inside.
That is really up to the person. The standard reason is that they like the look of it. It could also be representative of a moment of their life.
yellow shell or black shell very venomous not to be touched ever!