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Note that the common names of edible bivalves can be misleading, in that not all species known as "cockles" "oysters", "mussels", etc., are closely related. Ark clams , including: Blood cockle; Senilia senilis; Many species of true mussels, family Mytilidae, including: Blue mussels. Blue mussel; California mussel; Mediterranean mussel; Mytilus ...
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.
Nautilus (from Latin nautilus 'paper nautilus', from Ancient Greek ναυτίλος nautílos 'little sailor') [3] are the ancient pelagic marine mollusc species of the cephalopod family Nautilidae. This is the sole extant family of the superfamily Nautilaceae and the suborder Nautilina .
The Palau nautilus (Nautilus belauensis) is a nautiloid mainly found off of Palau in the Western Carolines. [2] It can be found on fore reef slopes, [3] at depths of 95m-504m (311'-1,653'), though typically preferring a range of 150m-300m (492'-984'), where water temperatures stay around 16.6 °C (61.88°F) and do not go much lower than 9.4 °C (48.92°F). [4]
Nautilus can occasionally be found closer to the surface than 100 metres, however, the minimum depth they can reach is determined by factors such as water temperature and season. [4] All Nautilus species are likely endangered, based on information from Nautilus Pompilius overfishing in the Philippines, which resulted in an 80% decline in the ...
Empty nautilus shells may drift a considerable distance and have been reported from Japan, India and Africa. Undoubtedly the same applies to the shells of fossil nautiloids, the gas inside the shell keeping it buoyant for some time after the animal's death, allowing the empty shell to be carried some distance from where the animal lived before ...
The chambered nautilus (Nautilus pompilius), also called the pearly nautilus, is the best-known species of nautilus. The shell, when cut away, reveals a lining of lustrous nacre and displays a nearly perfect equiangular spiral, although it is not a golden spiral. The shell exhibits countershading, being light on the bottom and dark on top. This ...
The ink can be ejected to create a "smoke screen" to hide the cuttlefish's escape, or it can be released as a pseudomorph of similar size to the cuttlefish, acting as a decoy while the cuttlefish swims away. [32] Human use of this substance is wide-ranged. A common use is in cooking with squid ink to darken and flavor rice and pasta.