Gelatinous Siphon Sheath Templates the Starfruit-Shaped Aragonite Aggregate Growth

Figure 4

SEM images of aragonite crystals grown on the inner surface of a L. sieboldii shell periostracum in nature. (a) Many of the spindle-shaped aragonite crystals are similar to those grown on the siphon sheath in Figure 2. (b) Enlarged view of (a) shows the detailed structure of the spindle-shaped aragonite.

(a)

(b)