The Deep Diver

One day, a diver was enjoying the aquatic world 20 feet below sea level. He noticed a guy at the same depth he was, but he had on no scuba gear whatsoever.

The diver went below another 20 feet, but the guy joined him a few minutes later. The diver went below 25 feet, but minutes later, the same guy joined him. This confused the diver, so he took out a waterproof chalkboard set, and wrote:

- How the heck are you able to stay under this deep without equipment?

The guy took the board and chalk, erased what the diver had written, and wrote:

- I'm drowning, you moron!