We found a secret base at the bottom of the ocean

Author : Richard Saxon. Sci-Fi Short: Story Ocean Creepypasta. A USO (unidentified submerged object) is any apparent anomaly underneath the sea that cannot be identified as a known phenomenon. The term "USO" was born when alleged sightings of extraterrestrial spacecraft underneath the sea began to surface. https://extraterrestrials.fandom.com/wiki/USO