One Morning...

Someone woke up and said,
"I feel like blowing up paradise!"

Operation Crossroads, Bikini Atoll, 25 July 1946.
Baker test, 23 Kiloton Bomb, detonated 90 feet underwater

Enlarge this pictures and see that those ships are Battleships, Cruisers, Destroyers, and an Aircraft Carrier. These tests were conducted to further understand the effects of nuclear weapons and radiation on Naval Vessels, harbors, and living creatures.

Bikini Atoll was used for later thermonuclear tests as well, Operation Castle detonating 7 weapons for a total of 75 megatons. The Bravo test of the "shrimp" device was projected to be 6 megatons and was actually 15mT , causing extensive radiological damage to the surrounding area. The intense thermal flash ignited a fire at a distance of 20 nautical miles on the island of Eneu (base island of Bikini Atoll). Then we made a bunch more of those bastards. (The Mk-21 Gravity Bomb, which we made at least 275 of)