The Maritime Dimension, Atlantica

You were a scientist that was assigned to a top secret research project. All the world's leaders came together to research on this. "What is it?" you may ask. Over 50 years ago, scientist heard a unusual radio frequency coming from some cave in the north Atlantic. All the world leaders came together to work together to find out what this radio frequency is and what does it lead to. After 2 years of preparation, the expedition was a go. When the scientists arrived at the cave, they saw a sea green portal that gave off the smell of the ocean. Scientists spent years studying the portal itself to see if it was safe to go into. When they felt comfortable, they sent scientists into the portal with a rope attached to them. But when they fully entered, the rope snapped every time. You were selected to enter this portal.