Dive below the surface and explore these incredible submerged communities.
Modern-day Atlantis: Mind-blowing underwater cities, by Passport Symphony
North America: A land of pioneering animals - BBC Bitesize
What Will the Underwater City of the Future Look Like?, by Astrid N. Wright, The Startup
Top 15 Underwater Cities That You Can Visit
Islands in the sun: Malaysia's stunning marine life
Explore oceans - BBC Bitesize
Explore oceans - BBC Bitesize
Thonis Facebook, Instagram & Twitter on PeekYou
Five funky designs for renewable energy - BBC Newsround
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Can cities respond to the threat of water insecurity
Five underwater cities from around the world - BBC Bitesize
Six of the most naturally colourful places in the world - BBC Bitesize
Underwater 'lost city' is a natural phenomenon, say scientists
Five places you didn't know were on UNESCO's World Heritage Site list - BBC Bitesize
