It takes a wild imagination and, more importantly, impressive feats of engineering, to build and sustain these spectacular underwater attractions.

"While I was in Puerto Rico, I was diving with a stranger, which is a little bit uncomfortable, so you're super hyper-focused. I was 70 feet underwater, looking at this incredible scenery around me.

The Caribbean islands offer the opportunity to experience the US Virgin Islands and Puerto Rico National Parks ... The park offers scuba diving, snorkeling, swimming, and hiking.