Sea Walking means literally walking under the sea. It is a new kind of sea sport which allows people to simply experience underwater without fear or complicated scuba diving skill. only with about 35kg helmet, you get to walk under the sea for about 15 minutes, experiencing the beautiful Southern sea while admiring marine plants, corals, starfishes, and tropical fishes.
– http://www.amazing-borneo.com/daily-local-tour/borneo-sea-walking-tour-abk-sw01.html