KOTA KINABALU: It is highly unlikely that a 50m-high tsunami, generated by a massive undersea landslide, will hit Sabah's northern coast, says a geological expert.

"A 50m-high tsunami will only be produced if the whole mass of a submarine shelf falls at one go. This is quite a rare occurrence. I personally think the chance of this happening is very, very low,'' said Prof Dr Felix Tongkul from the University Malaysia Sabah's Natural Disaster Research Centre.