Little Snails Shells On Grass

In all of the animal kingdom the snails' shell is among the most astonishing wonders of evolution.
The soft and flexible body of the living creature avoid of any skeleton construction, internal or external, is protected by the hard and lifeless shell.

The shell, however, is not permanently connected to the body.Snails' shells nevertheless are clearly different from all other shells evolved among the other mollusc groups.

The spirally coiled shell of a snail, though, is clearly different from that of other molluscs

Like among the cephalopods, there is also among snails a tendency to reduce the large and cumbersome shell for the benefit of movability.

Among terrestrial snails, as well as among their marine relatives, groups appear, with species bearing a shell in a different degree of reduction, up to completely shell-less snails or slugs.

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