They say spelunkers go in caves for sport or fun and cavers go in caves to explore and learn new things. But many people use the two words in the same way. Of course, scientists who study caves for their job are called speleologists. They know a lot about biology, physics, and chemistry. I’m not a speleologist, but I know a lot about caves. I’m serious about it, too, so I guess I’m a caver. But it’s OK if you call me a spelunker!