The correct spelling of the term "be guard" is actually "bêche-de-mer." This term refers to a type of sea cucumber commonly found in Southeast Asia and the Pacific. The word is of French origin and its pronunciation is /be də mɛr/. The accent grave over the "e" in "bêche" indicates a nasalized vowel sound, while the dash between "bêche" and "de" indicates a liaison - the "ch" and "d" sounds are linked together in pronunciation.