An adventurer on a dangerous but rewarding quest.
Any of several species of shelled octopods of the family Argonautidae (of which only the genus Argonauta is not extinct).
A person who strives for success and takes on risk by starting their own venture, service, etc.
A person who organizes a risky activity of any kind and acts substantially in the manner of a business entrepreneur.
A person who organizes and operates a business venture and assumes much of the associated risk.