Divers clutch wooden spears as they plunge beneath the waves, hunting hordes of hungry starfish destroying the coral reefs ...

Divers clutch wooden spears as they plunge beneath the waves, hunting hordes of hungry starfish destroying the coral reefs ...

What they found is that starfish don't have a head-to-tail axis that runs from the center to arms, from its top to its belly or from one side of its arms to the other.