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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 ...
Nautilus belauensis. Much of what is known about the extinct nautiloids is based on what we know about modern nautiluses, such as the chambered nautilus, which is found in the southwest Pacific Ocean from Samoa to the Philippines, and in the Indian Ocean off the coast of Australia. It is not usually found in waters less than 100 meters (328 ...
Allonautilus perforatus, also known as the Bali chambered nautilus, is a species of nautilus native to the waters around Bali, Indonesia. It is known only from drifted shells and, as such, is the least studied of the six recognized nautilus species. Thus, not much is known about it outside of the shell.
Only a single genus, Cenoceras, with a shell similar to that of the modern nautilus, survived the less severe Triassic extinction, at which time the entire Nautiloidea almost became extinct. For the remainder of the Mesozoic , nautilids once again flourished, although never at the level of their Paleozoic glory, and 24 genera are known from the ...
Argonauts are capable of altering their color. They can blend in with their surroundings to avoid predators. They also produce ink, which is ejected when the animal is being attacked. This ink paralyzes the olfaction of the attacker, providing time for the argonaut to escape. The female is also able to pull back the web covering of her shell ...
Wild salmon is more nutritionally dense than farm-raised salmon and can contain up to three times less fat, fewer calories, and more vitamins and minerals like iron, potassium, and b-12.
Chambered is an adjective related to the word chamber. It may refer to: Chambered body, an element of some electric guitars; Chambered cairn or Chambered long barrow, types of megalithic burial monument; Chambered nautilus (Nautilus pompilius), the best-known species of nautilus; Chambered stinkhorn (Lysurus periphragmoides), a species of fungus
Similarly to algae cultivation, shellfish can be farmed in multiple ways in both onshore and inshore mariculture: on ropes, in bags or cages, or directly on (or within) the bottom. Shellfish mariculture does not require feed or fertilizer inputs, nor insecticides or antibiotics, making shellfish mariculture a self-supporting system. [ 28 ]