One day I sent out a message in a bottle. And just when I thought I wasn't going to get an answer a message turned up. I'm going to send out way more messages in bottles because it is really exciting to get an answer.
If you want to put a message in a bottle you'll need to find a dry bottle with a wide neck that you can seal with a cork. Then get a bunch of duct tape and a small peice of paper. Write your message on the paper. You might want to write your age and name and how to contact you. You should write down where you are too! Once you're finished your message, role up the paper really tight and put it in the bottle. Cork it and wrap it with duct tape so it stays dry.
Throw it in an open stretch of water where there is some current. And then wait for an answer!