 A panorama of undersea views follow, including shipwrecks, underwater grottoes, huge shellfish, sea nymphs, sea monsters, starfish, mermaids, and a ballet of naiads.The ballet is interrupted by Yves, whose inexperience with submarines leads him to run his craft aground on a rock.Yves leaves the wrecked submarine and chases after the departing naiads, but is attacked by huge fish and crabs.