10 Dollars Long-Snouted Spinner Dolphin

The Marshall Islands began issuing an extensive series of brass dollar coins in the early 1990s, a program driven almost entirely by the collector market rather than any domestic circulation need. The republic's currency relationship with the United States meant these pieces had no practical monetary role from the moment they were struck.

The long-snouted spinner dolphin — Stenella longirostris — is a genuine presence in Marshall Islands waters, known for the aerial spinning behavior that gives the species its name.