Sea squirts begin life looking much like a regular tadpole. Hatched from an egg they swim around the ocean looking for nutrients and a place to settle.
For so long as the sea squirt is swimming with purpose through the water, feeding and looking for a rock to perch on, it uses its brain. Upon finding a suitable rock or ship wreck it attaches itself. It will never move again.
Thereafter it is not the sea squirt that directs itself. The ocean moves as it will and if this should happen to bring nourishment to the sea squirt then so be it.
The sea squirt is reactive. It is not a motive force in its own life. It cannot ...