alt Hacker NewsDAS has really been taking off in the marine bioacoustics world!
https://www.birds.cornell.edu/home/deep-listening/
https://depts.washington.edu/uwb/revolutionizing-marine-cons...
Very cool and very powerful technology, it'll be interesting to see how fiber sensing progresses, especially with how much undersea fiber already exists. For subsea power cables, is there a parallel fiber dedicated just for DAS monitoring? Do these get bundled in with data fiber runs as well? I've been curious how well DAS can work over actively lit / in-service fiber.
On the cables I worked on they would use a separate fibre, but power cables tended to overspec the number of fibers massively so was never an issue. Some even have two bundles of fibers.
A supplier played whale song they recorded from cables, and said they repackage and sell the same product to defense contractors.