have you ever seen a rainbow's end?

My husband packed us a picnic dinner last night and just as we arrived at the beach, it began to thunder.  We decided to eat in the car given that lightning probably wasn't far away.  This is what we saw after about 10 minutes of rain...

I've never seen the end of a rainbow.  This one ended right in the ocean.  It was awe inspiring.  This world we live in is fascinating.