"The Most Dangerous Game" author Richard Connell pretty much identifies the general location of the fictitious Ship-Trap Island shortly after Sanger Rainsford falls off his yacht. After managing a desperate scream as he plunges into the darkness,

The cry was pinched off short as the blood-warm waters of the Caribbean Sea closed over his head.

Connell had earlier hinted about the locale when he described the darkness of the "moonless Caribbean night." Rainsford is off on another hunting expedition, this time along the Amazon River in South America. He is probably sailing southward somewhere in the Caribbean toward this destination when he is sidetracked in the very unusual world of General Zaroff.