Dream About Floating In Saltwater Lake

I was in this training building, it was very similar to a school. The classes were like a labrynth. This building also had dorms where the residents could stay. Each dorm had 3-4 people staying in it. The atmosphere was stale and slightly humid. When I looked around the room i saw no familiar faces but they all said they knew me. After I stepped outside, there was a saltwater lake with a huge grotto surrounded by many trees. This man I used to know, named Cameron was there he jumped into the water and waved to me. He said I should jump in but I shook my head. I was so afraid to jump in; how would I know I could swim like him or anyone else in there, how would I know something wouldn’t try to eat me. The next day the teacher set out an assignment, my heart began to race; the assignment was to go in to the water and allow these fish that she added to bite away all your fat and make you more trim. Soon a building floated over the top of the lake and added the fish. They didn’t look too scary but they only reside in shallows. So they added a 20 ft eel; he looked like a giant water dragon. My heart sank when they told us to swim from one side to the other. I swam as fast as I could and was so tired I eventually didn’t care those small fish where biting me. The next day I helped Cameron move to a new dorm with his class mates, explaining why he needed all of his posters on the walls. He thanked me and I smiled. Looking outside I saw the lake and beyond its surrounding trees there was a field of bright green grass, and a mountain range. We were all called out side for a test examination jumping into the saltwater and staying under the water for 5 mins. Needless to say I was terrified. This faceless person grabbed me and jumped into the water we began spinning under the water. My body felt lifeless I was so scared of being attacked I began to float - giving up, but due to us spinning no fish followed our movements. I reached down to the bottom and touched the sand, it was very soft and fine. After the timer went off we swam to the edge. - That’s when I woke up.