We saw a family of "sky rays" feeding in the clouds

We were taking down our clothes drying on the balcony and looked out over ocean and saw six to eight giant rays at least a mile in diameter with a larger parent with a tail like a sting ray feeding in the clouds. They are translucent like a jellyfish and could be made of water vapor. They move around the sky resembling rays, jellyfish, and protozoa so they are from this Earth. I think they migrate every September to the Puerto Rican trench.