Synonyms to bathyal zone

abyss, Bassalia, Gehenna, Sheol, Tophet, abysm, abyssal zone, arroyo, benthos, bottom waters, bottomless depths, box canyon, breach, break, canyon, cavity, chap, chasm, check, chimney, chink, cleft, cleuch, clough, col, coulee, couloir, crack, cranny, crater, crevasse, crevice, cut, cwm, deep, deepness, defile, dell, depth, dig, diggings, dike, ditch, donga, draw, excavation, fault, fissure, flaw, flume, fracture, furrow, gap, gape, gash, gorge, groove, ground, gulch, gulf, gully, hades, hole, hollow, incision, inferno, inner space, joint, kloof, leak, mine, moat, netherworld, notch, nullah, ocean bottom, ocean depths, ocean floor, opening, pass, passage, pelagic zone, perdition, pit, profoundness, profundity, quarry, ravine, rent, rift, rime, rupture, scissure, seam, shaft, slit, slot, split, the deep, the deep sea, the deeps, the depths, trench, underworld, valley, void, wadi, well, workings, yawning abyss, big drink, blue water, drink, high sea, high seas, hydrosphere, main, main sea, ocean, ocean b