Common Seashell Types Illustrated - Marine Shell Identification Guide #1947880 (License: Personal Use)

This educational line illustration features four iconic marine mollusk shells: a ribbed mussel with concentric growth lines, a fan-shaped scallop with radial ribs and crenulated edge, a elongated whelk with spiral aperture and siphonal canal, and a coiled nautilus with visible chambered interior. Each shell is rendered in clean black ink to emphasize structural details useful for identification and learning.

Used on marine biology, education, or natural history websites to support shell identification guides, classroom materials, or museum exhibits; targets users seeking visual reference for common seashells found along coastlines.