Tsunami Balls-Survival Capsules

Call them what you like, these could save lives but until mass produced, they are very expensive.  Would these be a better way to go than building new tsunami wall for billions of dollars?

The Survival Capsule designed to withstand tsunamis, earthquakes and hurricanes (providing you’re not too claustrophobic!) Read more: http://www.dailymail.co.uk/sciencetech/article-3604428/The-Survival-Capsule-designed-withstand-tsunamis-earthquakes-hurricanes

 

Read more: http://gizmodo.com/5846211/get-ready-for-the-next-natural-disaster-by-hiding-inside-a-giant-yellow-floating-ball