"shell surface" is correct and usable in written English.
It is often used to refer to the outermost layer of a shell or exoskeleton, such as those found on a turtle, crab, or other hard-shelled animal. For example, "The turtle's bright green shell surface caught my eye."
Occasional pores are distributed unevenly throughout the shell surface (Fig. 2c,d).
A small trochid, Clanculus bertheloti, deposits its eggs in grooves on the shell surface and covers them with a sheet of mucus to hold them in place; many Neptunea simply cement the egg capsules to their shell surface.
The compressive strength when loaded perpendicular to the shell surface was approx. 50% higher than parallel to the shell surface.
The simulated vibration acceleration level from the shell surface was consistent with the experimental test.
These profile compressions correspond well with the positions of growth rings on the outer shell surface.
At a local point on the cloaking shell surface, the local incident angle is α, and the local phase of the incident wave is φ0.
Eggs must be waterproof to prevent desiccation; each egg has a layer of waterproofing wax, sometimes over the entire shell surface, more often lining the inside.
Many prosobranchs and some opisthobranchs have lateral projections of the foot called parapodia; they are used in swimming or else are reflexed over the shell surface.
The experiments on the shell surface, crescent surface, and real vessel models verify the accuracy and flexibility of the method.
Finally, it was shown that not only the shell surface, but also the bore surface could be successfully micro-structured.
The points of intersection on the shell surface are identified and the extra interior parts are removed.
