They are small or medium-sized crabs which get their name from the ability to shape a living sponge into a portable shelter for themselves.
The primary use of tents was still to provide portable shelter for a small number of men in the field.
It trapped 30 firefighters Friday and forced them to spend an hour in portable shelters called fire deflectors.
He had no food, no warm clothing, not even a portable shelter.
Danny and Katarina greeted them and led them to a portable shelter.
Prepare foodpacks, portable shelters, and whatever else will be needed for the journey, plus a sojourn of at least ten days in the icy wilderness.
The boys had erected portable shelters for their beasts, so I only saw steam rising out of the cracks and caught the rank reptile smell.
An alternative to the hangar is a portable shelter that can be used for aircraft storage and maintenance.
By the next afternoon, they had constructed portable shelters to protect the sapping teams, and had them in place.
Most nomads live in tents or other portable shelters.
