The juvenile sea squirt wanders through the sea searching for a suitable rock or hunk of coral to cling to and make its home for life. For this task, it has a rudimentary nervous system. When it finds its spot and takes root, it doesn't need its brain anymore so it eats it!
I married a woman who is much better than me, I'm very fortunate to be with her and I know I'll be happy with her the rest of my life.