Figure 4
From: Pteropods make thinner shells in the upwelling region of the California Current Ecosystem
Shell images obtained by light microscopy, micro-CT and scanning electron microscopy (SEM) of eight Limacina helicina specimens illustrating the variability in our data set. (a) Specimens with a thick shell (upper row) and a thin shell (lower row) without dissolution marks. (b) Specimens with a thick shell and a thin shell showing marks of initial dissolution (Type I), with pitting at the inner whorl (indicated by arrows). (c) Specimens with a thick shell and a thin shell with Type II marks of dissolution penetrating the aragonite structure. (d) Specimens with a thick shell and a thin shell with Type III dissolution, characterized by deep damage on the outer shell surface. All images in the same row are of the same specimen.
