Always Afternoon · the shallows

Reach into the water.

Everything down there washed in from somewhere else on this island. Pull one out and it will tell you where.

Nothing in your hand yet. Nine places on this island lose things into this water; take one out and you have found one of them.

Leave something in the water

It becomes a bottle in these shallows. Plain text, no name on it, and anyone reaching in can pull it out.