Creature identification

[jonhall]

At one time I knew what this creature was, but I've forgotten. I took the picture in 2014 during a swim through of the Gregory II in St. Maarten. The name almost comes to me and then I lose it. Type of horseshoe crab??

I figured someone could tell me quicker than my mind will. Thanks in advance.

 

[northernone]

Looks like a slipper lobster.

I'm curious to see how long it takes to get the detailed identification!

Cameron

 

[uncfnp]

Sculptured Slipper Lobster?

Parribacus antarcticus

 

[jonhall]

I think you both nailed it. Have done some research and characteristics match up pretty well. Thanks!