With 7 billion people on Earth, it only makes sense to take to the seas. Using the principles of arcology (combining architecture with ecology), these designers have come up with some mind-blowing ideas for making the homes we live in beautiful and sustainable. These creations look like futuristic spaceships. It’s hard to imagine they could quickly become our reality.

Hopefully one day I’ll be living on the water, soaking in the rays beside my solar panels and palm trees.

1. The Seascraper

This baby has underwater turbines that are powered by currents and photovoltaic skin that collects solar energy. It also has a concave hull that collects rainwater.

William Erwin and Dan Fletcher | eVolo

2. Lady Landfill Skyscrapers

These hulks would be built on underwater landfills (didn’t know that was a thing). Ocean garbage would be collected at the bottom and then recycled inside, which would start cleaning up the oceans we’ve ruined over the years. The underwater tower would then support above-water islands that include housing settlements.

Milorad Vidojević, Jelena Pucarević and Milica Pihler | Inhabitat

3. Harvest City

This concept is developed for Haiti, a country that is no stranger to natural disaster. The structure would have solar power roof panels and wind turbines to create energy. There are also plans to grow cash crops and possibly livestock on the “land” they construct on the water. I wonder if cows get seasick?

E. Kevin Schopfer / Tangram 3DS | Yanko Design

4. The Coral Reef Project

The Coral Reef Project would consist of 1000 units for people to live in the Caribbean. It would harness energy from the waves, and the structure would improve the standard of living of many, many people. Each unit would have a green terrace so there is still a place to be outside in your little pod.

5. Lilypad

The Lilypad, which was designed to look like a waterlily, is intended to be a zero-emission city afloat in the ocean. They want the city to be able to produce its own energy through solar, water, and wind power. They also think the city will be able to process CO2, just like a real plant. Whoa.

6. Green Float

Take a look at this video to see the development Japan wants completed by 2025.

7. Autopia Ampere

This city will essentially build itself. Stay with me. Autopia Ampere would begin as a series of wire mesh sculptures that are connected to a low voltage current produced by solar panels. The electric reactions would draw up sea minerals over time, creating walls of calcium carbonate on the mesh. Get it? Me neither.

Wolf Hilbertz | Impact Lab

8. The Citadel

The Citadel could be Europe’s first floating apartment building—it is scheduled to have started construction in 2014 (the website will let you sign up for info on getting an apartment there). It is predicted that it will consume 25% less energy than a normal building in its lifetime.

9. Greenstar

This island is also supposed to have a small environmental footprint, and its goal is to host many global climate change discussions.

10. Hexagonal Floating City in China

The project is expected to be completely self-sufficient, with on-island food production, power generation, and waste management systems. How cool is that?

AT Design Office | Asia Green Buildings

11. The Embassy of Drowned Nations

This sounds like a really scary place, but it is actually really cool. The facility in Australia would be used to temporarily house those who’ve been displaced by rising sea levels.

12. Eco-Techno City in Russia

The main residential hub will be located in a central 500-ft “green” skyscraper featuring vertical farms, solar panels and even rainwater collectors. Nice job, Russia!