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Arca noae is found in the Mediterranean Sea. It was once common in the Adriatic, but in 1949/50 there was a sudden unexplained, catastrophic decline in numbers. Since then, populations have been creeping back upwards, and in 2002, densities of up to 13 individuals per square metre (11 square feet) were recorded.
The shell of Arca zebra is boldly striped in brown and white which gives it a resemblance to the wing of a wild turkey. The whole shell (when both valves are together) has also been likened to Noah's Ark. It is a sturdy shell growing up to 4 in (10 cm) long and 2 in wide.
Ark clams are edible mollusks that have been consumed since pre-historic times and are still consumed today. Numerous recipes for ark clams have been published. Recreational foragers should follow seafood safety guidelines and shellfish harvesting restrictions, and should be aware of any harmful algal blooms that may contaminate shellfish with ...
Those subscribed to Xbox Game Pass can download it for free too. The Ark: Survival Ascended free weekend starts today, lasting until 10 AM PST on Monday, April 8.
The Arcida is an extant order of bivalve molluscs. [1] This order dates back to the lower Ordovician period. They are distinguished from related groups, such as the mussels, by having a straight hinge to the shells, and the adductor muscles being of equal size. [2]
The windowpane oyster (Placuna placenta) is a bivalve marine mollusk in the family of Placunidae. [1] It is edible, but valued more for its shell (and its rather small pearls). The oyster's shells have been used for thousands of years as a glass substitute because of their durability and translucence.
The gill of all shelled Sacoglossa is composed of a series of many parallel, ciliated lamellae, which are folds of the outer tissue layers of the mantle roof and cover the surface of the kidney. [7] [10] Images from Mikkelsen, 1997: [8] Ascobulla shell (4.0 mm length) Ascobulla shell, expanded (3.1 mm length) Apex of specimen in Image B
The iridescent nacre inside a nautilus shell Nacreous shell worked into a decorative object. Nacre (/ ˈ n eɪ k ər / NAY-kər, also / ˈ n æ k r ə / NAK-rə), [1] also known as mother-of-pearl, is an organic–inorganic composite material produced by some molluscs as an inner shell layer. It is also the material of which pearls are composed.