The clams were factual enough, but the cucumbers were a reference to "sea cucumbers," which is a more common name for "trepang," more exactly denned as Holothuria edulis, a sea .
De Monfreid meets, among others, an imprisoned spy (a "venomous reptile") whose escape he enables and later regrets; a Chinese trepang trader on a deserted island; a metrosexual .
Father Mark spent his time between pearl diving, trepang fishing, debtors' jail, bouts with delirium tremens in the local hospital.