> In the realm of marine biology it has long been observed that both
> starfish and lobsters have very unique traits which, to the best of
> current biological knowledge, do not occur elsewhere in nature. For
> one, starfish have regenerative capabilities: if one were to cut off
> the limbs of a starfish (as many unknowing fishermen have often done)
> it does not actually kill the starfish...in fact it creates five more
> in its place. Biologists know that this is an advanced form of budding,
> but they do not know how or why.
Bova discussed this in his new book on immortality. If I recall correctly (I don't have the book in front of me), he did not mention any instances where the ecology of these entities were investigated for possible applicability to humans.