Encyclopedia of Dreams
by Michael and Elizabeth Thiessen
If you dream of a peaceful lagoon you will have serene enjoyment in your domestic life.
If the lagoon is not inviting you will be cast into doubt and misuse your intelligence on mundane matters that do not require your attention while forgetting the important things.
Ten Thousand Dream Interpretation
by Gustavus Hindman Miller
To dream of a lagoon, denotes that you will be drawn into a whirlpool of doubt and confusion through misapplication of your intelligence.
Dream Symbols and Analysis
by DreamForth
To dream of seeing a lagoon symbolizes misunderstanding and reservation in your expressions.