High Quality Content by WIKIPEDIA articles! Pachymelania is a genus of sea snails, marine gastropod mollusks in the family Thiaridae.Snail is a common name for almost all members of the molluscan class Gastropoda that have coiled shells in the adult stage. When the word is used in a general sense, it includes sea snails, land snails and freshwater snails. Otherwise snail-like creatures that lack a shell (or have only a very small one) are called slugs. One species of land snail, the Giant African Snail, can grow 15 inches (39.3 cm.) from snout to tail, and weigh 2 lbs.

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