Webster's Revised Unabridged Dictionary · 1913

beachcomber

beachcomber

1.
(Nautical) A vagrant seaman, usually of low character, who loiters about seaports, particularly on the shores and islands of the Pacific Ocean.
I was fortunate enough, however, to forgather with a Scotchman who was a beach-comber. — F. T. Bullen
2.
a vagrant living on a beach.
3.
a person who searches along a beach for objects of value, such as lost objects or seashells.