In all cases, octopuses used mimicry as a primary defense.

As you said, young Ben, one would be a fool to mount an attack on such a man's primary defenses.

He found a tuna's primary defense against the sharks was speed and as the fish tired they became easy targets.

The primary defense of the group against air attack was the group's own fighter cover.

The primary defense for this species is camouflage and nocturnal behaviors.

This is the primary defense against the release of radioactive material.

These were the primary defense against fast torpedo boats and aircraft.

In matters of foreign policy, flexibility is a President's primary defense against surprise.

In recent months, legal experts have said that should Thiokol go to court, it would probably assert two primary defenses.

This city used to be primary defense for the basin.