MaineSight

At low tide, there are hundreds of these starfish on the barnacle encrusted rocks in Hancock, Maine. I’ve read (in a book by Thorton W. Burgess) that a single arm of a starfish can re-grow an entire new starfish. How does that happen? Wouldn’t that mean that the starfish’s arm has to first grow a new stomach so that it can gather food for what must be a pretty seriously energy intensive re-building process?