[spchampion2]

Diver here. I'm looking at these four pictures after the fact, so I already know they're fake. They're good, but they also have some weird flaws. That said, I don't think I would have immediately recognized any of these as wrong on Facebook (maybe the diver photo).

- The nudibranch (slug thing) on the green coral doesn't look like anything I've seen in the Caribbean before, and the coral also looks odd for the region. That said, this is probably the most difficult photo for me to differentiate. I would have accepted this as a cool find of something I haven't seen before.

- The grouper (big fish) photo is actually pretty good, although DALL-E has misplaced its eyes a bit. That said, the lit foreground and dark noisy background are exactly the look I would expect for someone using a basic camera + lights with wonky post-processing.

- The diver photo is a horror show. There's a hose going nowhere on her back. It looks like she's blowing out of a harmonica instead of a regulator. Bubbles are collecting around the top of her mask for some reason. Her fins look like they were badly Photoshopped. Nothing looks right here.

- The lobster photo has a real but subtle flaw: Caribbean lobsters don't have big claws. It also looks like it's under a rock like you would find in cold waters around Massachusetts and Maine instead of the Caribbean.

Interesting stuff though. It will force me to be more skeptical when I look at people's photos in the future.