Sounds good. My own experience is that green crabs often have some blue coloring on claws and elsewhere. I’d guess is not a hybrid. But the blue is very blue and there are people who might be keen to test it out!

Can you elaborate on the location (what bay, for example) and how common this blue morph is?

Any more photos?

If a human told you things that were correct 80% of the time but claimed, flat out, with absolute confidence, that they were correct 100% of the time, you would dislike them & never trust a word they say. All I'm really suggesting is for people to treat chatbots with that same distrust & antagonism.

But the idea that “the product doesn’t suffer” seems so questionable. And also (per other comments) just doesn’t seem possible

Peer review is slow! This is a pre-print that is ideally in the review process now. Pre-print sharing is common in academic spheres. Though grain of salt required…

No idea if these authors have submitted this for peer review or not.