Dreams waves

I got into my 20 year old jeep to discover it was parked at the top of a very steep hill facing down. I thought it was going to tumble over and tried to ask a man passing to help but he walked on. I instinctively and slowly released the handbrake and it began to roll - it was ok. I got out at the bottom of the hill where there was a garage? Then I noticed the tyres were almost completely gone - they were done to the metal like they'd been attacked with acid or ripped away. I wondered who would do that to my car, but left it there and went on into a large room where people were. Some of them I knew from voluntary work I do. There were lots of children playing on an escalator/slide - I told them to take their shoes off, which they did but left them on the escalator where they slid everywhere. I walked over to another moving floor where other were playing - It developed pleats/ waves and swallowed up one of them. The child seemed to be all right though as if she didn't panic. I kept thinking I should be doing more but wasn't sure what or how to manage it all.

I dreamt i was in the sea swimming and everyone around me were singing as if in a musical whilst they were surfing and riding the waves

I had a dream last night that I was at someone's house, my grandpa was there but it wasn't his house and I was there with my 2 yr old and my mom, my 1 yr old wasn't there or not born yet. I was talking with my mom and I looked out the kitchen window and saw waves lapping at the grass in the backyard, instead of being frightened and taking my son to safety, I took him outside, with mom yelling to be careful through the door. I was standing at the edge and the water was lapping my toes and slowly started to get deeper, there were boats now driving in the water. I somehow ended up at the edge of the house and remembered I had brought my son out with me, I called out for him and turned back and that's when I saw him floating face down in the water. I screamed and then I woke up I have never left him or forgot him anywhere and I always keep a close eye on him when we're around water. Needless to say this dream terrified me and I wish I knew what it meant to help ease my mind

I dreamt about tidal waves covering the earth and asteroids coming in hitting the earth

The tide was washing up against the shore,only the waves were sand?