For your Just Too Cool file, this from History blog.
Divers doing an inventory of underwater archaeological sites off the coast of Pantelleria, an island in the Straights of Sicily between Sicily and ancient Carthage (modern Tunisia), have found almost 3500 bronze Punic coins lying in the sand.
The inventory project started in June, with divers exploring the sea off the Cala Tramontana (the east coast of the island) in order to create an itinerary for scuba tourism. They expected to see ancient artifacts, especially ceramics and amphorae which the area is known for, but the enormous quantity of coins was unexpected. They first discovered just a few hundred Punic coins (already an immense treasure, of course), but then day after day they just kept finding more until they reached 3,422.
All the coins were minted between 264 and 241 B.C., the exact dates of the First Punic War, and they all have the same iconography: the Carthaginian fertility goddess Tanit wearing a wreath of wheat on the obverse, a horse’s head flanked by symbols like a star, letters and a caduceus.
The coins were scattered on the sea floor relatively close to shore. There was no container or cache. Divers retrieved every individual coin by hand.
Read the rest there.