^Well normal tidal waves are a different thing...those steps cannot stop a giant tsunami...even something like the one tht came on December 26th 2004 wud be devastating..

The tsunami tht originated at sumatra, went all the way upto the african continent...so u can imagine the force and the momentum of the waves...
Nothing can stop nature when its at its best...
Also the rising ocean levels worldwide mean, sooner or later it'll get submerged...so wots the use..??
Moral of the story, breathe easy and buy property on solid land, away from the sea.....
