These acrylic structures, resembling large balloons, hold approximately 2,000 liters of air and float at different depths, between 15 and 36 feet below the surface of the water.
Each biosphere has a step grid where the divers may stand to operate. When a diver is in the biosphere 1⁄2 of their body is outside of the water.
Inside the biospheres, water condenses on the inner walls, dripping back down to keep the plants watered, while the warm, near-constant sea temperature between day and night creates ideal growing conditions
The tree of life
At the center of Nemo’s Garden, stands the Tree of Life, a 12-feet-tall, 10-feet-wide metal structure weighing approximately half a ton.
It symbolizes evolution and the strive for innovation and technological advancement, suggesting a momentum towards the future.
The Tree of Life also serves an important function in the Garden, in that it conceals the cables running to each biosphere and allows to monitor the area from above, controlling the light levels through a live camera feed.
In addition, two webcams are located in each biosphere, while a wide angle horizontal webcam is placed at the bottom of the sea.