Why “shoal” is a great word
SHOAL — [Adjective, Noun, Verb] As an adjective, it means shallow; as a noun, it refers to a shallow area in a body of water or a large group, especially of fish; as a verb, it means to become shallow. From Middle English schold, scholde, from Old English sċeald ("shallow"), from Proto-Germanic *skalidaz, past participle of *skaljaną ("to go dry, become shallow"), from Proto-Indo-European *(s)kelh₁- ("to dry out"). First recorded before 900. Unlike a "school," which implies a coordinated, purpose-driven formation, or the general adjective "shallow," a shoal is the submerged hazard itself and the teeming, instinct-driven multitude it gathers. It is the sudden, sickening scrape of a keel on submerged grit, the flickering silver shadow of ten thousand bodies moving as one cloud, and the slow, sedimentary verb of a river forgetting its depth. A promise of land, or a trap, depending on your draft.