Dream of father, mother, surrounded, swim, bloody, died, eyes, injured, raining, woke up

My brother,my father,my mother, my dad's friend are stuck in a high platform surrounded by a raging sea. It's raining and lightning occasionally flashes. Everyone is looking out at a oddly shaped island in the distance. It's in the shape of a circle, with water in the middle. There's more water than land. The island has random jutted elevations all around the land circle. There's a ladder on the tallest one, that goes straight into the raging sea. On the other side of the body of water in the middle of the island is another raised land feature, also with ladder, although it's not as tall as the one closer to the platform me all stood in. My mother is not looking at the island with us, she is in a tub, bloody and injured. Something must've happened that I couldn't remember. She's still alive though, but barely. For some reason, we all decided that the island was the safest place to be, and that we had to get there somehow. We had one lifesaver like floater with two ropes attached. My dads friend only showed up in the dream sometimes, other times he'd disappeared. It's as if he was only there to talk to my dad. My dad said he'd swim across first. My brother immediately disagreed saying it was too dangerous. Before anyone could object, he slid under the handrail and into the water. Me and my dad watched in horror as he swam across the violent sea towards the island. A flash of lightning made the water transparent for a bit and me and my dad saw a group of giant sharks and monsters swimming under my brother, they started trailing him. We watched, and screamed for him to swim faster, but he couldn't hear anything. He swam past the first ladder and went for the second one. The lightning flashed again to reveal a giant shark directly underneath my brother. He decided to go for the first ladder again and turned around. Me and my dad were panicking at how long he was staying in the water, but he made it and climbed onto the platform. Suddenly my dads friend was back and commenting at how many monsters were in the water, my dad got ready to swim across. I objected and told him that I'll go first, then me and my brother would swim back with the lifesaver, and get him, which was on the circular island. The rain continued to pour, and I looked down at the water, waiting for lightning to make it transparent again. In the distance I saw two huge black figures come out of the water and go back in. I could feel dread and panic over taking me. I went to my mother and told her to hang on. Her eyes opened but she couldn't speak due to her injury. I slid under the handrail and dropped into the sea. I started swimming my legs off, I dared not to look down into the darkness. The ladder was getting closer. The lightning flashed and directly under me I saw something that had a long neck and large teeth. It was looking right at me. I swam faster, reached the ladder and climb up to meet my brother. The point of view changed. Now it was my father and his friend, staring from the platform to the dark figures of me and my brother across the raging sea. Suddenly, the long neck of the monster came out of the water and started attacking me and my brother. My dad watched in horror. My dads friend talked to him, saying something obvious. He said something like "the monster will keep attacking them till they die." My dad watched as I wrapped a rope around the monsters mouth and held on tightly, as did my brother. The monster moved violently. Our tiny dark figures were thrown around as my dad watched. Finally, he watched us get eaten alive as we fell into the beasts' mouth. My father looked at his friend and said, "I would like to share the same grave as my sons. He jumped into the water. The view was of him hitting the water, but never emerging out. My mother was still in the tub, bleeding out. Me,my brother, and my dad were standing over her smiling. We were dead though. She smiled back at us, and closed her eyes, I assumed she died too. That's when I woke up.