If you have seen a tunnel in the sea in your dream: Focusing on some negativities may actually cause you to miss topics, opportunities or opportunities that can have very beneficial results. To see a tunnel in the sea in your dream refers to accomplishing miracles for some and being happy, being appreciated and a good life, good days and being happy. Seeing a tunnel in the sea in a dream and being surprised means that you will increase your success and a rich life by taking the mind of your loved ones.