In which I fall back on an oldy but goody:
It roams the ocean floor, always ravenous, always ready to kill. When it finds its prey, it pulls it apart with hideous strength and then eats it while the prey is still alive. What is this fearsome beast? Is it a shark? A kraken? The Loch Ness Monster? Nope. It’s a starfish. The most common starfish species on both the East and West coasts, beloved by millions of beach-going children, are actually mighty predators.