Early this week, a submersible is expected to dive to 300 meters (nearly 1,000 feet) off the Seychelles in the Indian Ocean and send images to a satellite transmitter on the mother ship.
The Nekton Mission highlights the state of the seas as fears grow over climate change. The Indian Ocean is the least explored in the world, and there is almost no data from the Seychelles below scuba depth.
The challenge is to transmit live video from the depths without restricting the free-roaming submersible. The solution turns the images into light, which is transmitted to a decoder suspended above the submersible and then sent to the mother ship via fibre-optic cable.
Darryl Newborough, whose company is behind the innovation, said: “The real clever bit is, we are now transmitting two high-bandwidth streams of video data from both of the submarines simultaneously and this has never been done before.”
Keeping two submersibles and the decoder, called a depressor, in the optimal configuration is a delicate task that the mission’s head of marine operations, Luke Ansell, called a “complicated ballet”.
Once the live footage reaches the mother ship, it will be fed into a video control room where the best images will be selected and sent around the world.
“I think our underwater broadcast is a great outreach experience but it also provides that connectivity of people with their oceans,” said Nekton Mission principal scientist Lucy Woodall.
“If we all choose to take collective responsibility then we can really make sure they are managed sustainably for the future.”
The first live video is expected to be broadcast within the next few days, depending on the weather and operational conditions.