A submarine communications cable (or undersea cable) is a cable laid on the sea bed between land-based stations to carry telecommunication signals across stretches of ocean and sea. A large chunk of it passes by the Straits of Malacca which is also one of the busiest shipping lanes in the world these days. Image source: Submarine Cable Map.
This World War 2 plaque in the centre of the Morib beach states the 46th Indian Beach Group landed in Morib on 9 Sept 1945 and handled 42,651 personnel, 3,968 vehicles and 11,224 tons of stores. It was reported that it took four days them to reach Kuala Lumpur as there was fierce resistance from the Japanese Army.