Shells T Travel 09 of 12
Tower screw
shell
Turritella terebra
Slide far along the axis and widen slowly, and you get a tower of 23 turns.
- W widening
- 1.21
- D distance
- 0
- T travel
- 5.6
- S shape
- round
- turns
- 23.1
The settings our model uses to draw it, tuned by eye against photographs.
The real shell · about 14 cm
Real shells reach as many as 30 whorls; the shape is likened to a drill.
Turritella comes from the Latin turritus, towered.
- Lives
- Indo-West Pacific
- In the exhibition
- Room 2, Four numbers: one of three shells for T, how far it slides.