The key to every dream is the situation and feeling in the dream. Now that you have entered your subconscious, why do you go to your subconscious or your subconscious will tell you what is the key to dream interpretation?
If you swim freely in the sea, it means that all parts of your subconscious mind are relatively coordinated and your heart is relatively calm. If the sea is rough and the sky is gloomy, it means that you are in a bad mood and need to improve. Or if you see a lot of fish and want to catch them, it means that your subconscious is suggesting that you have an opportunity to grasp in reality. If you swim to the depths of the sea, it is possible that your mind will go far away to realize your wish.
You can have a good understanding of your dreams and the scenery in them, and make a cognitive analysis, so as to better understand your inner feelings and thoughts. Dreams are our subconscious thinking, which will bring us some unexpected enlightenment.