Our planet is 71% ocean, yet over 95% of this vast blue realm remains unexplored, unseen, and unshared in real-time. For decades, the underwater world has been a place of digital silence. Divers, creators, and scientists have been bound by the age-old "record-edit-post" cycle, capturing stunning footage only to share it hours or days later. We've only ever seen a "second-hand ocean."
What if you could live stream a coral spawning event? What if an underwater engineer could video call a topside expert for a real-time consultation? What if you could simply share the magic of a dive with your family, live, as it happens?
The barrier has been broken. DIVEVOLK is proud to introduce SeaLink, a revolutionary Underwater Smartphone Data Transmitter that brings a stable, real-time internet connection to the world beneath the waves. This isn't just an accessory; it's a communication revolution that finally allows us to share the ocean in real time.
What is SeaLink and How Does It Work?
At its core, SeaLink is an innovative system designed to bridge the gap between the surface world's cellular network and your smartphone, even at depths of up to 30 meters (approx. 100 ft).
It works in three simple parts:
- A Surface Processing Unit (CPU) floats on the water, acting as an intelligent buoy that captures 4G cellular signals.
- A specialized, lightweight 30-meter data cable transmits this signal from the surface unit with zero loss.
- The Underwater Communication Operation Terminal—which houses your smartphone in a DIVEVOLK professional waterproof housing—receives the signal, giving you full internet access to live stream, make video calls, and use any app.
Intelligently Designed for the Real World
SeaLink was engineered by divers, for divers. We focused on reliability, portability, and ease of use in complex underwater environments.
Surface Unit & Connectivity
The floating unit is packed with intelligent features. Its high-visibility Water Surface Safety Marker Cover with reflective strips ensures it's easily seen by boats. It's compatible with Multiple Carriers, with versions for Asia, Japan, Europe, and the U.S. Best of all, the Telescoping Buoyancy System allows for one-second deployment and stowage, making it incredibly efficient to transport and set up.
Diver-Focused Cable & Terminal
We solved the problem of cable management. The innovative Smart-Lock Retractable Wheel breaks conventional limitations, enabling a solo diver to effortlessly manage the 30-meter cable without tangles or needing surface support. The ergonomic Underwater Terminal provides full touchscreen access to all your mobile apps, while Multi-function Extension Threads on the grip allow for a fully customized setup.
A True Game-Changer for Underwater Operations
SeaLink's power isn't just in its connection; it's in the possibilities it unlocks.
Unleash Full App Freedom
This isn't just for calls. SeaLink brings your entire digital life underwater. You can live stream directly to TikTok, Instagram, or YouTube Live. You can hold a team meeting on Zoom, get information from ChatGPT, or post a photo to Facebook—all while submerged.
A Complete Creator's Ecosystem
The SeaLink terminal is the heart of your underwater studio. Expand your creative potential by attaching diving lights, macro or wide-angle lenses, color-correction filters, and buoyancy support arms. It’s a fully integrated system, compatible with our SeaTouch 4 Max kits and accessories.
Modular Design for Easy Maintenance
We built SeaLink for the field. Its modular design ensures easy self-maintenance. If a single part is damaged, you can replace the module independently without costly, time-consuming factory returns. This minimizes downtime and keeps you in the water.
Built for the Field: Key Specifications
SeaLink is ready for any mission, with specs to match:
- Battery Life: 60 hours
- Cable Length: 30 meters (withstands 5kg pull force)
- Output WiFi: 2.4 GHz
- Total Weight: 9.5 kg (in its protective suitcase)
- Ambient Temp: -10°C ~ 50°C
Unlocking Infinite Scenarios: The New Undersea Frontier
When real-time data flow becomes possible, the applications are limitless, moving from "one-way recording" to "real-time interaction."
- Live Streaming & Content Creation: A dive instructor in Mabul can live stream coral spawning to thousands. A cave diver can share their exploration of a cenote in real-time. Brands can host live underwater product demos, and events like the Mermaid Open can be broadcast instantly.
- Science and Education: Scientists repairing coral on the Great Barrier Reef, who used to lose 127 working days a year surfacing to transmit data, can now do it instantly, dedicating more time to conservation.
- Commercial & Engineering: An engineer maintaining an oil platform can use live video to collaborate with a topside team, reducing inspection and-return times by over 60%.
- Dive Training & Safety: Instructors can provide real-time video guidance to students. In an emergency, a diver can make an immediate video call for help, dramatically improving safety.
- Personal Connection: A diver in Portugal can make a live video call to their family from beneath the waves, sharing their passion in a way never before possible.
What's in the Box?
The SeaLink system comes as a complete, field-ready kit. It includes the Central Processing Unit, Underwater Communication Operation Terminal, batteries and charger, mobile phone adapter blocks, a protective case, safety beacon, draining mesh bag, and a protective suitcase for transport.
See SeaLink Live at DEMA Show 2025!
Words, pictures, and even videos can only show so much. The magic of real-time underwater communication is something you have to see to believe.
DIVEVOLK is officially launching and demonstrating the SeaLink system at DEMA Show 2025 in Orlando, Florida!
We invite you to be among the first to experience this groundbreaking technology. Come to our booth, see a live demonstration, talk to our engineers, and get your hands on the future of underwater connectivity.
Event: DEMA Show 2025
Date: November 11th ~ 14th
DIVEVOLK Booth: 685
Address: Orange Country Convention Center, Orlando, Florida
Conclusion: A New Era of "Real-Time Interaction"
The era of "record and wait" is over. While traditional underwater broadcast setups can cost upwards of $100,000, SeaLink democratizes this technology, making it an accessible choice for dive clubs, resorts, and serious creators.
The age of underwater "real-time interaction" has begun. The ocean's silence is broken, and its every ripple, every discovery, and every story now deserves to be seen by the world—live.
We'll see you in Orlando.
