This little chunk of rock about four inches long probably just doubled the amount of life we have in the tank. At least two living clams (structural hitchhikers?), some tunicates, a Christmas tree worm, some other shy polychaete, and probably several other helpful hitchhikers! I immediately regret not buying more.
I'd love to see the invert hitchhikers you guys found on your rocks!
I'd love to see the invert hitchhikers you guys found on your rocks!