In China there is a long tradition of landscape painting: shan shui 山水 (mountain water), gardens, mountains... One such type of Chinese landscape painting depicts old pines on windy mountain sides. This aquascape reminds me of that style. It is 'natural' in that it is inspired by nature in the wild. Chinese painting (in China, Hong, Kong and Taiwan) has much to offer in the way of inspiration for aquascapes. Same can be said for Japan too - though I am not so familiar with art history therein.