What are submarine dreams about?

TW: Attack, murder, male on female violence

Last night before bed, I was reading about the Sarah Everard case (Rest in peace), and reading this reddit. Admittedly not the best two things to do before going to sleep.

I dreamt that I was underwater suddenly, deep in the ocean. I was losing breath and there was a submarine I could see, so I swam to it. There was a huge piece of it missing towards the bottom, like it had crashed, but somehow the air was still inside of it and it was still working. So I swam through and climbed inside, and inside was a creepy looking man. I immediately felt his presence was bad, but we were descending further into the water and in the dream I was aware that if I swam out again, I would die due to the pressure, so I stayed sitting in the corner afraid of him. He was walking around with a knife in his hand, looking at me and casually doing things with the knife like cutting a thread off of his pants. And he got closer and closer doing this until he latched out at me. In the dream I told myself I didn't want to feel the pain, and I knew I was going to die. So everything went black, and I could feel the knife going all across my body but it didn't hurt. I was crying and screaming and even though everything was black, I could tell he was grinning as he was killing me. And I thought "I should have left, I would rather die from drowning and being crushed by the pressure than this."

And then I woke up and was so glad it wasn't real.

When I see a vivid dream I wake up exhausted , for example I see that I traveled to another planet and the journey feel so pressure because it's too long , or I see that I'm in the ocean standing on the floor of a submarine surrounded by storms and height waves .

I wrote this seconds in my dreamjournal after woke up. So there are a few typos.

Dream start:

an old dog in a fancy suit named 'one' from the 'Dakota secret agency' was tied up in a giant underground complex and Everyone inside was partying. the boss of that operation was the antagonist from the movie:split. spiderman was also there. aparently he was trying to hide by blending in to the crowd. but it was weird,cuz he was still in his suit. then the indian guy from deadpool came along with a glass of champagne and asked if he was alright.

then somewhere above ground, Skipper and kowalsi were trying to get into the complex wich was under a giant freeway. Kowalski had a brilliant idea using something het got a few minutes ago from the giant supermarket in japan. I was also in that Giant supermarket with my mother. I was my normal age at 22 but i was acting like a child. i was looking for a movie called: the colourful seven, and the cover had zootopia characters on it. my mother was just trying to do groceries. but then, suddenly the meat section was sold out and thousands of asians were running in a certain direction. when we went outside we where in new york but all the streets were made of water. I saw all the asians run towards a soviet era submarine parked in the street. then I looked up and saw smaug fighting a giant nick from zootopia and batgirl in the batjet. Nick was flying (like superman) after smaug, but smaug wasnt really looking in front of him and he crashed into the Empire state building.

back in the underground comlex, john wick was killing all the Terminator robots ( wich were apparently there) with his lightsaber. ripping of the exact scene from the mandolorian season 2 finale . after john was done he walked up to the antagonist from the movie: split, and cut the plate with paprika sandwiches he was holding in half and then he shot a random teddybear in the face with a shotgun.

then I woke up.

So last night I had this weird dream where in school I said a cuss word and apparently it was against the law to say it. After I said this word (which I don’t remember what it was) a teacher told me I was going to be sent to submarine boot camp in the summer and I was going to stay there for 220 something days. I was crying after I was told this and that’s all I remember about this dream.

I was in a submarine with my friends but they were all older and I dont remember any specific friend apart from one of them this friend sent me a long message last week to me saying that he'd be there for me because I have depression,and also social anxiety. we were all in the submarine then the megalodon came and attacks the submarine and it started leaking and then exploded I went down when it expoleded and I saw one of my friends with an inhaler trying to keep my other friend from drowning with it. Then ,I think I had my eyes closed, and I swam up and I could feel it in my lungs that I was drowing and it felt real, and then I woke up from the dream and felt a bit dizzy. I wasn't sure if I made it to the surface or drowned. I think that I had a dream like this before but when I swam up I made it to the surface and got my breath back. What does this mean in very curious.