10 Unsettling Things About the Ocean That Still Puzzle Us

The ocean, covering more than 70% of the Earth's surface, is a vast, dark, and mysterious place. Despite centuries of exploration, much of it remains uncharted and unknown. Below are ten unsettling aspects of the ocean that continue to puzzle scienti 1. The Mariana Trench's Unexplored Depths
The Mariana Trench is the deepest part of the world's oceans, reaching depths of over 36,000 feet. Its darkest corners are home to extreme pressure, cold, and a surprising array of life. The trench is so vast and inhospitable that it has been explored only a handful of times, leaving us to wonder what other secrets it might conceal.