Examples from the Web for soldier crab
The Child clapped his hands for pleasure, and longed to see the soldier-crab and make him ashamed of himself.
When we returned to camp we were told that the half of our soldier-crab baits had been sucked off by bonefish.Tales of Fishes|Zane Grey
Parasites also are found in messmates; the soldier-crab gives lodging to the sexual Eustoma truncata in its interior.Animal Parasites and Messmates|P. J. Van Beneden
And the Soldier-crab withdrew his long legs from the pebble, and marched away with a braggadocio air among the sea-weeds.