Unidentified submerged object

An unidentified submerged object (USO) means that there is something in the water that we don't know what it is. It's kind of like when you hide something and someone asks you where it is, but you don't want to tell them because it's a surprise.

Sometimes people see things in the water that they don't recognize. It might be a big shape or an object that they've never seen before. They don't know what it is or where it came from.

Scientists and researchers are very curious about USOs because they want to know if they are something new or if they came from somewhere else. They want to learn everything they can about USOs so that they can understand more about our world and what's in it.

But just like with your surprise, sometimes it's better to keep things secret until you're ready to share them with others. So, sometimes USOs might stay a mystery for a while until someone can figure out what they are.