The highly competitive world of aquascaping — artfully arranging aquatic plants, rocks and other objects in an aquarium — combines biology, design, landscaping and a great deal of patience.
Although the tanks range in size, aquascapers often work with aquariums no larger than one you might keep in your home. Many of the tanks contain less than 100 gallons of water.
It can take months or even years to complete an aquascape, but the finished products are nothing short of amazing.
These were some of the finalists from the Eastern European Planted Aquarium Design Contest, which took place in Moscow in November.
Laura Moss is an editor and writer at Mother Nature Network.