A river dolphin dream

I had a dream last night.
In it, I am in a tropical big river. It might be Amazon River.
I board a small boat with a local guide. Water of the river is cloudy white, and I can't see under the water.
The guide says that you can swim with a river dolphin diving to the river. I dive into the river without any clothes.
I can't see well in the water of the river. I dive for a while, I dully see a big thing coming toward me.
I find it a river dolphin. It is white and twice as big as me, and swimming slowly.
I press myself against a belly of the dolphin. It continues to swim, it doesn't look like caring me. I am not choking despite diving in the water for a long time. I swim with it for a while.
I think how to bring up a baby of me and the dolphin when he born. I wonder if we should bring up the baby in the water or on the ground.