Now, it’s not exactly Earthlike . . .
The Telegraph reports:
Still . . . if there’s water . . . If we assume water is essential to life . . . What life-forms could live in hot water under high gravity? Anybody better at xenobiology than I care to speculate? 
Panned I know… but imo the movie was somewhat brilliant science fiction.
It’s a world of Crawfish people. Self boiling, even. I move we call the planet Zatarains.
Probably critters similar to what lives near to deep sea vents on Earth. If the world-ocean is hugely deep however then it may be largely sterile since there will be little source of nutrients for anything near the surface. If the seabed is a hundred or a thousand miles down and there’s no land to erode minerals into the ocean, all the minerals needed for life will be far away from the sunlight at the surface.
Crab people! Crab People!
Look like crabs, talk like people!
Gizmodo managed to completely mangle the science on this, saying that “most” of the planet was water, when the original article only claimed “significantly more than Earth” (which is at 0.02% water).
What would happen to a planet that was actually 50%+ water? Would the oxygen and hydrogen combust once subjected to a planet’s worth of gravity?
It’s Yuggoth!
If the temp is 232 °C, wouldn’t it be Steamworld, not Waterworld? Or is the gravity sufficient to keep the water liquid at that temp?
Not only that, apparently the gravity is sufficient to produce something called “hot ice.”
I would imagine the sea life would be similar to what exists at the bottom of the sea and/or around hydrothermal vents, where a large variety of creatures exist under extremely high pressures and heat, conditions under which life would seemingly be impossible.
No. Water is hydrogen “ash” already.
If “planet’s worth” was enough mass, it would create nuclear fusion (like any large mass). Otherwise I suppose it would be more like a gas giant like Uranus or Neptune.
Somebody send that article to Kevin Costner!
You could hard-boil a heck of a lot of eggs on GJ1214b.
Need an Alien?
Why not try Zoidberg!
Well… it depends. They’d probably start out as extremophiles, sure. But after 1 million years? 100 million years? 1 billion years? The real answer is that we really don’t know. We’re in a puddle that happened to conform to the hole that it was poured into, we have no idea what shape other puddles will be in, and we won’t know much until xenobiology is an actual science rather than a WAG’ing game.
sigh Well, I guess we’ll just have to go and find out. Invent an FTL drive, somebody.
Sorry, I built one in the garage, but the Test Pilot I selected has been away from the board for a while.
At those temperatures and pressures, water onGJ 1214 b can be lots of cool stuff:
Is there also wondrous strange snow?