If you have dreamed of swimming in the dark sea in a dream: However, you should not ignore the experiences it provides, or you may experience a great disappointment. Swimming in the dark sea in a dream indicates that you will realize your mistakes, even if you are late, to renew yourself, to have a good life, to smile, to succeed in overcoming your problems. Being afraid of the dark sea in a dream means repeating mistakes and falling out of people's eyes, being unhappy and experiencing regrets.