Even though we have satellites that can map whole continents and GPS that guides us through the most remote places, the ocean still hides many secrets. The Pacific Ocean– the largest and deepest on Earth– is still one of the least explored parts of our planet.

Even with today’s advanced technology, scientists continue to be surprised by what’s found beneath its surface.

In recent years, researchers have discovered some strange and unexpected things deep in the Pacific. Some are mysterious, some tell us about our past, and others show how human impact has reached even the deepest parts of the ocean. From a golden orb to plastic waste found at the ocean’s lowest point, these discoveries remind us how much we still don’t know about the underwater world.

Here are eight of the most fascinating things found in the depths of the Pacific Ocean. Note: This list is based on information from WorldAtlas(dot)com.