Top plane - The skies with the white clouds/smoke from the boat representing the "magical" dream-like, super-natural energies of their thoughts/moments/imagination/experiences.
Middle plane - Over seas with their boat, on the vast open ocean, representing a tie from the skies to the depths and a reflection of the fine line between their tangible adventures and awesome imagination with excited determination to independently and innocently manifest their pure world, amazing adventures and fun experiences. Also"calming" of the beautiful vast sea before a storm.
Bottom plane - The depths and water representing excitement and foreshadowing of the unknown exciting energies , explorations and adventures to come. The fish give a dynamic "instinctual" migration to surface, small frys always lead to something bigger and vice versa.