Plus a scientifically engineered adrenaline rush called the Ultimate Abyss slide
Royal Caribbean employs this guy named Brendan Walker, a bespectacled, bald-headed Brit who has spent his life studying the brain chemistry behind excitement. He goes by the name Professor Thrill, and measures brain activity during different phases of an extreme experience: from the decision to take a risk, to the anticipation of doing it, to the ups and downs one encounters while experiencing something dangerous, to the exhilaration after. His research went into creating the Ultimate Abyss, a 45-meter, 10-story slide that sends you hurdling through an angler fish's mouth down a tunnel of neon lights and darkness at speeds approaching 9ft per second.
To enhance anticipation, it requires you to climb to the top deck of the ship, and look down at the water 16 decks below. You then climb ANOTHER set of stairs... and wait. With that nervous energy built up in your brain, the slide starts out with a steep drop, spiking your adrenaline before sending you on a twisty- turny vertical ride. The ride takes about 17 seconds, and every time you think you're getting conformable, it jolts you in a new direction until you finally feel the relief of coming out the bottom. And your brain definitely takes a little while to return back to normal.