Are starfish immortal?

To answer your question, I can't find any particularly convincing reports stating that starfish are biologically immortal, so it seems that as far as we know, they're not. read more

The animals that can possibly achieve immortality under ideal conditions, such as sea squirts, certain corals, Hydra, and Turritopsis nutricula (the immortal jellyfish), often activate telomerase. Helen Nilsson Sköld of the Department of Marine Ecology, University of Gothenburg, and colleague Matthias Obst are studying sea squirts and starfish to learn more about how these marine creatures seem to ward off aging. read more

Yes, starfish is technically edible. Seagulls are able to eat the entire starfish. Their poop is full of ground-up bits of purple-coloured sand as a result. read more