Linked from
The 10 pages that link to Submarine cable, each with the reason it gives.
Naval warfareRelated: Undersea infrastructure creates strategic targets beyond ships and ports.
SubmarineRelated: Submarines inspect and help maintain infrastructure that crosses the ocean floor.
Submarine landslideRelated: Landslides and their sediment flows can sever cables across broad areas.
SeabedRelated: Cable routes must account for seabed depth, terrain, and stability.