Walk underwater and explore the coral reef and tropical fish of bali on a small group tour limited to just four people per session from the grand mirage resort in nusa dua this seawalker experience is as easy as putting on a comfortable helmet breathing normally and entering the water sink down 10 to 16 feet 3 to 5 meters and spend up to 25 minutes walking underwater checking out the natural environment total duration of this tour is 15 to 2 hours