Such physical struggle is indeed necessary to evolve and maintain a type fit for the struggle.
On September 8, 1900, a Category 4 hurricane ripped through Galveston, Texas, killing an estimated 6,000 to 8,000 people. At the time of the 1900 hurricane, Galveston, nicknamed the Oleander City, was filled with vacationers.
Between 6,000 and 8,000 people in the city of Galveston had died, and estimated casualties for the entire island ranged from 10,000 to 12,000. Property damage is impossible to estimate by current standards, but contemporary figures ranged from twenty to thirty million dollars.