Apparently it's styrofoam or turtle log covered with plants and secured with fishing line. Whatever it is, it's awesome. Aquariums Design, Floating Islands, Freshwater Aquariums, Fish Tanks, Interiors Design, Awesome Aquascaping, Graphics Design, Plants Aquariums, Deep Blue Sea
Manage your freshwater aquarium, tropical fishes and plants The floating island is cover with a thin layer of substrate and small rocks with moss insert between them. Staurogyne sp. are planted on the thin layer of substrate. A visual illusion is used to mount a grid on the back glass so as the plant grows out, the whole grid is masked by the plant.
Aquariums by artist Takashi Amano who applies principles of Japanese gardening to "aquascaping"