However, as fast as the wolverines dug, they did not appear to make correspondingly swift headway in uncovering their find as might reasonably be expected. In fact, a witness could guess that the shell was sinking at a pace only a fraction slower than the burrowers were using to free it. Intrigued by that, Shann went back to the waterline, secured one of the lengths he had been trying to weave into his failures, and returned to use it as a makeshift shovel.

Now, with three of them at the digging, the brown hump was uncovered, and Shann pried down around its edge, trying to lever it up and over. To his amazement, his tool was caught and held, nearly jerked from his hands. To his retaliating tug the obstruction below-ground gave way, and the Terran sprawled back, the length of wood coming clear, to show the other end smashed and splintered as if it had been caught between mashing gears.

For the first time he understood that they were dealing not with an empty shell casing buried by drift under this small beach, but with a shell still inhabited by the Warlockian to whom it was a natural covering, and that that inhabitant would fight to continue ownership. A moment's examination of that splintered wood also suggested that the shell's present wearer appeared well able to defend itself.

Shann attempted to call off the wolverines, but they were out of control now, digging frantically to get at this new prey. And he knew that if he pulled them away by force, they were apt to turn those punishing claws and snapping jaws on him.

It was for their protection that he returned to digging, though he no longer tried to pry up the shell. Taggi leaped to the top of that dome, sweeping paws downward to clear its surface, while Togi prowled around its circumference, pausing now and then to send dirt and gravel spattering, but treading warily as might one alert for a sudden attack.

They had the creature almost clear now, though the shell still rested firmly on the ground, and they had no notion of what it might protect. It was smaller, perhaps two thirds the size of the one which Thorvald had fashioned into a seagoing craft. But it could provide them with transportation to the mainland if Shann was able to repeat the feat of turning it into an outrigger canoe.

Taggi joined his mate on the ground and both wolverines padded about the dome, obviously baffled. Now and then they assaulted the shell with a testing paw. Claws raked and did not leave any marks but shallow scratches. They could continue that forever, as far as Shann could see, without solving the problem in the least.

He sat back on his heels and studied the scene in detail. The excavation holding the shelled creature was some three yards above the high-water mark, with a few more feet separating that from the point where lazy waves now washed the finer sand. Shann watched the slow inward slip of those waves with growing interest. Where their combined efforts had failed to win this odd battle, perhaps the sea itself could now be pressed into service.

Shann began his own excavation, a trough to lead from the waterline to the pit occupied by the obstinate shell. Of course the thing living in or under that covering might be only too familiar with salt water. But it had placed its burrow, or hiding place, above the reach of the waves and so might be disconcerted by the sudden appearance of water in its bed. However, the scheme was worth trying, and he went to work doggedly, wishing he could make the wolverines understand so they would help him.

They still prowled about their captive, scrapping at the sand about the shell casing. At least their efforts would keep the half-prisoner occupied and prevent its escape. Shann put another piece of his raft to work as a shovel, throwing up a shower of sand and gravel while sweat dampened his tattered blouse and was salt and sticky on his arms and face.