These pups live in the deep, scrounging around in the darkness for rotted detritus, and occasionally they are captured on trawling lines. The one in the picture is about 2-1/2 feet long and was found clinging to a submarine returning from an oil rig in the Gulf of Mexico. They’re related to common pillbugs, wood lice and lawn shrimp. Wikipiddlia has this:
“In northern Taiwan and other areas, they are common at seaside restaurants, served boiled and bisected with a clean lateral slice. The white meat, similar to crab or lobster in texture, is then easily removed.”
I’d eat it.