5 Dollars Grey reef shark

Palau has issued wildlife-themed silver pieces since the mid-1990s, largely targeting the collector market rather than domestic circulation — the republic's own currency in everyday use is the U.S. dollar. The grey reef shark series emerged during a period when Pacific island nations were aggressively competing for a share of the numismatic novelty market, with Palau's government licensing production to external minting facilities rather than operating its own.

Palau's waters fall within Micronesia's reef systems, where grey reef shark populations have faced documented pressure from finning operations — which lends the subject matter a conservation angle that was almost certainly deliberate.