A thin-leaved spiralled aquarium plant

In[3]:=
  w = 0.01; (* width of each leaf *)
  l = 0.2;  (* length of each leaf *)
  n = 10;   (* number of spirals *)
  nleaves = 200;
  spine[z_] =
    {0.1 (1. - Cos[N[Pi] z]), 0.1 (Cos[N[Pi] z] - 1.), z};
  rotation[t_] =
    {{Cos[t],Sin[t],0},{-Sin[t],Cos[t],0},{0,0,1}};
  plant = 
    Graphics3D[Table[Polygon[
      Map[
        (N[rotation[2Pi n z].#] + spine[z])&,
        {{0,0,0},{0,w,0},{l,w,0},{l,0,0}}
      ]
    ],{z, 0, 1, 1./nleaves}]];

In[4]:=

  Show[plant];

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