A dive instructor begins his lesson on the shore. As he guides his students out into the
water, what zone are they in?
O A. the oceanic zone or the deepest intertidal
zone
OB. the intertidal zone or the deepest hadal
zone
O C. the sublittoral zone or the shallowest
bathyal zone
OD. the intertidal zone or the shallowest
sublittoral zone