When you think of a new place for growing food, you might think of Mars. But one Italian family believes one possible place is right here on the Earth: the ocean. 

Nemo's Garden is the world's first underwater system of land plants. Located off the coast of Noli, Italy, it consists of several greenhouses called biospheres, each of which is attached to the seafloor. "The aim of it is to change agriculture, and add a possibility for growing produce in the ocean," says co-founder Luca Gamberini.

His father Sergio Gamberini came up with the idea by combining his two passions — diving and gardening. In 2012, the project began with planting basil (罗勒) underwater. Now Nemo's Garden is growing strong.

"Our limited number of resources can not promise sustainable (可持续的) development," Luca says, "and we believe that underwater gives us some advantages over traditional agriculture."

Floating six to ten meters underwater, plants in Nemo's Garden are separated from any outside pathogens (病原体). Also, the temperature of the ocean water is an ideal environment for plant life. Besides, Nemo's Garden uses a technique that uses water-based nutrients (养分) instead of soil. "Also, there is little interaction with the underwater environment and related ecosystems, which means no harm is caused to sea creatures," adds Luca.

Everything is monitored on land through cameras and sensors, and settings can be adjusted. When it's time to harvest, a diver will cut the vegetation, place it in bags and float them to the surface.

The team at Nemo's Garden has plans for even bigger biospheres in the future, as well as other locations. Luca believes the future of Nemo's Garden will be mostly along the coastlines where communities could benefit from the added space it offers.