Flipped back over and back into the bay. Must have been recently taged.
Not a live when found.
This horseshoe crab was a baby I think. It was 4 Inches on it’s abdomen. It’s tail was as big as it body. It was a tan, skin color. It was digging and moving in the sand and stirring up the sand.
Jekyll Island https://www.inaturalist.org/calendar/lincolndurey/2018/9/14
My best guess, lost legs.