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The Vermetidae, the worm snails or worm shells, are a taxonomic family of small to medium-sized sea snails, marine gastropod molluscs in the clade Littorinimorpha. [1] The shells of species in the family Vermetidae are extremely irregular, and do not resemble the average snail shell, hence the common name "worm shells" or "worm snails".
The Vermetoidea, the worm snails or worm shells, are a taxonomic superfamily of small to medium-sized sea snails, marine gastropod molluscs in the order Littorinimorpha. [1] [2] The shells of species in the family Vermetidae are extremely irregular, and do not resemble the average snail shell, hence the common name "worm shells" or "worm snails"
These eggs have a strong shell that protects them against a range of environmental conditions. The eggs can therefore survive in the environment for many months or years. Many of the worms referred to as helminths are intestinal parasites. An infection by a helminth is known as helminthiasis, helminth infection, or intestinal worm infection ...
Gongylonema pulchrum was first named and presented with its own species by Molin in 1857. The first reported case was in 1850 by Dr. Joseph Leidy, when he identified a worm "obtained from the mouth of a child" from the Philadelphia Academy (however, an earlier case may have been treated in patient Elizabeth Livingstone in the seventeenth century [2]).
Brachiopoda, marine animals that have hard "valves" (shells) on the upper and lower surfaces ; Bryozoa, also known as moss animals or sea mats; Chaetognatha, commonly known as arrow worms, are a phylum of predatory marine worms that are a major component of plankton;
The irregular shape of their shells gives the Florida worm snail its name as they resemble the tubes made by tube worms. [9] As they grow, Vermicularia shells start to uncoil due to the need to access food and to attach to substrate they live in stabley. [10] The shells are also used by hermit crabs, such as Calcinus verrillii, as shelter.
These worms are toxic, hard to kill, and dangerous to native critters like earthworms, but likely pose little danger to humans or larger animals.
Spirorbis is a genus of very small (2–5 mm (0.079–0.197 in)) polychaete worms, usually with a white coiled shell. Members of the genus live in the lower littoral and sublittoral zones of rocky shores. Spirorbis worms usually live attached to seaweeds, but some species live directly on rocks, shells or other hard substrates.
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