December 23, 2025: Imagine starting your day with breakfast in Mumbai and sitting down for lunch in Dubai — all within two hours. While it sounds like something straight out of a science fiction film, a proposed underwater rail project between India and the UAE claims to turn this idea into reality.
A recent Instagram video has brought attention to this ambitious concept, showcasing what it describes as a supersonic underwater train connecting the two countries via the Arabian Sea. According to the video, “The Deep Blue Express is actually being built right now, connecting India and the UAE through the Arabian Sea, but here’s where it gets crazy. This train travels between 600 and 1000 km per hour, which is faster than most aeroplanes.”
The train is envisioned to run deep beneath the sea, allowing passengers to travel at hypersonic speeds, significantly cutting down journey times compared to conventional flights. Beyond speed, the project promises an experience unlike any other.
“What makes it even more mind-blowing,” the narrator says, “is that they’re building panoramic windows into the tunnel walls. Imagine cruising 200 metres below the Arabian Sea while massive sharks, whales and schools of fish swim past you. It’s like travelling inside the world’s longest aquarium at supersonic speeds.”
The project’s scope goes well beyond passenger travel. As explained in the video, “Now here’s what most people don’t know – this isn’t just about passengers, the tunnel serves a dual purpose – it will transport crude oil from Dubai to India and fresh water from India back to Dubai, solving two massive rigorous problems simultaneously.”
With an estimated cost of over $50 billion, the project is among the most expensive infrastructure ideas proposed globally. The video claims it could generate “over 50,000 jobs, transform Mumbai into a global hub and reduce travel costs between India and the UAE by nearly 60 per cent.” It adds, “By 2030, you could be having breakfast in Mumbai and lunch in Dubai, all while watching Marine life that humans rarely get to see.”
If realised, the underwater train could reduce travel time to about two hours, compared to the usual 3 to 3.5-hour flight. While timelines remain unclear, discussions between India and the UAE are reportedly underway to explore the feasibility of this futuristic link.
