}

Left or right snail other than crab

2006/05/01 Elhuyar Zientzia Iturria: Elhuyar aldizkaria

Left or right snail other than crab
01/05/2006 | Elhuyar

The crab of Calappa flammea eats sea snails. But not all, if the shell shell makes from left to right (if it is levógiro), the crab cannot eat. The reason is that the right arm of the crab (the one that uses it to eat) cannot fulfill its function, it is not adapted to this structure.

Fortunately, the shell of most snails is dextrógiro, that is, from right to left. This question has brought the biologists a question: if marine shells with levogira shell have this advantage, why are they not more abundant?

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