Gelatinous Siphon Sheath Templates the Starfruit-Shaped Aragonite Aggregate Growth

Figure 2

SEM images of crystals grown on a siphon sheath (a-c) and on a coverslip (d) for 24 h. Aragonite crystals that developed from an irregular shape to starfruit-shaped and spindle-shaped structures (as indicated by black arrows) are shown from (a) to (c). A rhombohedral calcite is shown in (d).

(a)

(b)

(c)

(d)