In response to physical damage or even starvation, they take a leap back in their development process, transforming back into a polyp. In a process that looks remarkably like immortality, the born-again polyp colony eventually buds and releases medusae that are genetically identical to the injured adult. In fact, since this phenomenon was first observed in the 1990s, the species has come to be called “the immortal jellyfish.”
If anyone is wondering why the body text on this page looks so beautiful, it's this sneaky CSS property:<p><pre><code> font-smoothing: antialiased;
-webkit-font-smoothing: antialiased;
-moz-osx-font-smoothing: grayscale
</code></pre>
Seems like sites with notoriously nice UI (e.g. Stripe) all like to use it.