Your child will discover the underwater world quietly lying on his play mat, filled with water, Opus's Ocean of Discovery (TM). Hours of games with Baby Einstein's Octopus Opus. Easy filling of the central part of the mat with tap water and inflation of the borders. While lying or sitting, baby develops his small muscles and moves the 6 sea creatures under the surface of the sea. A nice gift for curious little ones discovering the touch and the cause-effect relationship of these sea creatures that swim and move about. across the carpet. Baby learns to sit and has fun while developing fine motor skills. Easy to clean. Drain the water and deflate the mattress, then run a sponge before storing it in your travel bag or in the closet. Perfect for games at home or on the go. Your amazed child discovers the magic of the oceans and awakens his senses for hours!