Human beings have dealt with killer waves for thousands of years, as have animals. Hours before the 2004 tsunami, a dozen elephants being ridden by tourists started suddenly trumpeting. One hour before the wave hit, the elephants headed to high ground—some of them even breaking their chains to get there. After the tsunami, wildlife officials at Sri Lanka’s Yala National Park were shocked to find that hundreds of elephants, monkeys, tigers, and deer had survived unharmed.

