These appear to match Lysiosquilla maculata, a species not especially uncommon at Kwajalein, usually in sandy patches of Halimeda algae. It is a spearing stomatopod similar in size and habits to L. lisa.
The hole of a Lysiosquilla in a sandy patch of Halimeda algae. The shrimp is somewhere down in the burrow. The holes are smooth sided and wide, and extend fairly deep, perhaps close to a meter before they curve away out of sight.
Created 15 July 2018
Updated 6 February 2024