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The lusterless color pattern is rather distinct, overall white with black zigzag flammules on each whorl. Those spots have a tendency to become axial lines in older, larger individuals. [7] The upper surface is often entirely black. The aperture is commonly white, with an inner iridescence because of the nacre.
A seashell or sea shell, also known simply as a shell, is a hard, protective outer layer usually created by an animal or organism that lives in the sea. Most seashells are made by mollusks, such as snails, clams, and oysters to protect their soft insides. [1] Empty seashells are often found washed up on beaches by beachcombers.
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1742 drawing of shells of the money cowrie, Monetaria moneta Cowrie shells The shells of cowries are usually smooth and shiny and more or less egg-shaped. The round side of the shell is called the Dorsal Face, whereas the flat under side is called the Ventral Face, which shows a long, narrow, slit-like opening (), which is often toothed at the edges.
An area of the ectoderm thickens, then invaginates to become a "shell gland". The shape of this gland is tied to the form of the adult shell; in gastropods, it is a simple pit, whereas in bivalves, it forms a groove which will eventually become the hinge line between the two shells, where they are connected by a ligament. [2]
A sailor's valentine from circa 1870. Shellcraft, also known as shell craft, is the craft of making decorative objects, or of decorating surfaces, using seashells.The craft includes the design and creation of small items such as shell jewelry and figurines made from shells; middle-sized objects such as boxes and mirror frames covered in shells; sailor's valentines; [1] and larger constructions ...
Seashell in the sand. Seashell is an off-white color that resembles some of the very pale pinkish tones that are common in many seashells. The first recorded use of seashell as a color name in English was in 1926. [1] In 1987, "seashell" was included as one of the X11 colors. Cockle on the Shell Beach, Western Australia
Several beads made from Nassarius gibbosulus shells are thought to be the earliest known forms of personal adornment, or even jewelry.Two shell beads found in Skhul Cave on the slopes of Mount Carmel, Israel, are thought to be 100,000 years old, whilst another found at Oued Djebbana, Algeria, is believed to be 90,000 years old.