Dream of swim

In my dream I was swimming in what appeared to be a river. However it was a very deep river. In it were two big sharks, but I don't think they were bull sharks. Also, they don't hurt me, they seem to know me and act friendly towards me. I swim towards something, then I see it's a door that's under water. Then I know that the sharks are guardians of the door. They swim alongside me, and guide me to it safely. Then the door opens and I swim into a bright light. This is where the dream ends and I wake up.