With proper mitigation, evacuation and informatory systems damage can be minimized leaving minimum deaths but loss of property can only be prevented to a very small extent.
There is a certain type of wall that will hold back a tsunami. However, it doesn't mean nothing will get damaged.
It can't be because it can't be prevented and there is no way to know when one will happen.
The most destructive, if not the largest, tsunami ever recorded was the Sumatra tsunami known as the Boxing Day 2004 tsunami, on 26 December 2004. An earthquake off the west coast of Sumatra in Indonesia sent a deadly tsunami across the Indian Ocean and smaller waves into the Pacific (and Southern) Ocean. The wave caused deaths or damage in Indonesia, Malaysia, Thailand, Burma, Bangladesh, India, and on the coast of Somalia in Africa.
The 2004 Bali tsunami was larger in scale, with a magnitude of 9.1-9.3, triggered by an undersea earthquake off the coast of Sumatra. The 2009 Samoan tsunami was caused by an earthquake off the coast of Samoa and American Samoa with a magnitude of 8.1, resulting in significant damage and loss of life but was not as widespread as the 2004 tsunami.
The 2004 Boxing Day quake and tsunami hit hardest on Sumatra, the largest island in Indonesia, most affecting the province of Aceh on the north end (northwest end) of the island.
Most of the damage from the Sumatra-Andaman earthquake was from the tsunami it triggered rather than the earthquake itself. When the earthquake occurred it caused the seafloor to shift upwards, displacing an enormous column of water. This caused a wave to race across the ocean that came ashore in many locations as a surge of water with enough force to sweep away entire buildings.
The tsunami in Japan on March 11, 2011 was triggered by a massive undersea earthquake off the coast of Tohoku. This earthquake, known as the Tohoku earthquake, happened along the fault line where the Pacific Plate subducts beneath the North American Plate, generating the powerful tsunami waves that caused extensive damage along the Japanese coast.
They are about the same, but if I had to say: Tsunami.
tsunami
what precautionary measures are taken to minimize the damage caused by the tsunami
There was one tsunami that was approximately 84 metres high and did a lot of damage-I'm not being very specific am I?
Two significant tsunamis in recent history occurred in the Indian Ocean in 2004 and in Japan in 2011. The 2004 Indian Ocean tsunami resulted in over 230,000 fatalities across multiple countries. The 2011 Japan tsunami, triggered by a powerful earthquake, caused widespread destruction and over 15,000 deaths, in addition to the Fukushima nuclear disaster.