An unidentified object near the California coastline, seen here in a computer-generated image, has reignited public debate over “unidentified submersible objects,” reportedly moving beneath US waters.

Aliens arrived on Earth thousands of years ago and may STILL be hiding in secret bases thousands of feet below the oceans' surface, according to a respected congressman who is only the latest to echo ...

A fascinating, unclassifiable orb found in the Gulf of Alaska is not an alien object, as some speculated, but the remains of ...

Searching for life in alien oceans may be more difficult than scientists previously thought, even when we can sample these extraterrestrial waters directly. A new study focusing on Enceladus, a moon ...

Here's the real science behind the seafloor 'UFO.' When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. A circular shape on the seafloor visible on ...

From our perspective, the Earth is pretty darn big and for most people, there is a massive amount of land to explore. After all, you can travel for days at a time without every running into an ocean, ...