world coming to a end dream?

This is what I wanna say is the second time I've had a dream about the world coming to an end. I've dreamed it before and they both involved the ocean and tsunamis everywhere. This time I was dreaming about a lot of different people, I had a dream that my teacher just had a baby but he was my brother (just going to say what I remember best from this bizarre dream) so I was long aside the waterline of the ocean with my newborn baby brother and my other brother who is 9 (let's give him a name) Chris.. my other sibilings were there as well (let's also give them names) Gina, Jackie, now finally continuing... I stopped and looked at the sun it appeared to be setting and everything looked so calm it was a normal beach day, nice and crowded but calm... I looked down at the water seeing it wash up and float away again, on repeat and then noticed; goggles. I told my sister Jackie to go get them, out of nowhere her father who molested me appears and tells me she can't and won't grab the pair of goggles, so Jackie doesn't move but instead the goggles float to her and that's when I didn't even realize the water started to rise I was so distracted by the goggles, Jackie picked them up and I told her to come on I turned around and noticed there was a bit of a hill now to walk back up on to the dry sand due to the water rising.. I told Jackie let's go, Gina and Chris are already up we need to catch up, next thing I remember I'm falling over and the water feels like it's much higher and I see the water it's foaming but still slightly clear; clear enough for me to see a dark figure swim across it, what I thought was a shark, I freaked out and started to rush out of the water; at least I tried.. brother Chris was somehow back in the water with me along with the newborn while Jackie and Gina were waiting for us..I pushed Chris out and handed him the newborn and kept telling him to go, go, go! But the waves they were getting so powerful he's try going and the waves would try sucking him in & every time I would try getting up the water would pulled me in it was a intense moment and I just woke up and immediately thought to myself, I've had a dream similar to this, why, what is wrong with me?