(why) is going to be food for the PC.
"Seeing as they're rather slow and fairly dull-witted, you manage to catch a horseshoe crab by walking up to one and picking it up... Yum."
They're NOT good eats. Better than starving, I suppose, assuming you get a non-toxic one.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.