On Rebbelib navigation charts, cowrie or other small shells represent:

Question

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Cowrie or other small shells on a Rebbelib navigation charts represent the position of the islands.
Cowrie or other small shells represented the position of the islands on a Rebbelib, or a navigation chart. This would help sailors navigate their travels in the sea around the Marshall Islands. This information was memorized, and the charts would not be carried on the voyages.

On Rebbelib Navigation Charts, Cowrie or Other Small Shells Represent