There's a great deal of suspense associated with writing a letter, bottling it and sending it out to sea. This whole theme tends to be a cliché found in some adventure films, cartoons and even romantic movies.
As an adult, have you ever watched a cartoon or movie and were still inspired to try out anything you saw? Depending on whatever it was you saw, you may only be limited to fantasising about doing the same. That's where bottling a letter and putting it in the ocean is different.
Your letter doesn't need to be anything fancy. You could possibly write about how bad your day was and express this in poetry. Simply write about anything and everything that's on your mind at the very moment you commit to writing. Place your message in a glass bottle, and seal it.
Finding a method of putting your bottled message out to sea can be a bit tricky. This is because if you drop it into the water at the beach, it might just get washed up on the shore again. Try to send off your bottled letter on a world class adventure next time you're out on a boat fishing, or maybe even on your next cruise.