An amphora is a type of container with a pointed bottom and characteristic shape and size which fit tightly against each other in storage rooms and packages, tied together with rope and delivered by land or sea. From Wikipedia
Diver uncovers ancient "Follis" coins dating from the reign of Roman Emperor Diocletian and Constantine the Great; archaeological team finds the preserved coins along with ancient jugs indicating possible shipwreck, in a region vulnerable to natural phenomena and human actions.