Portuguese man o' war
During this, the being known as 'Doctor Shaw' enters the care unit. Helena has asked him to examine the unconscious Koenig and see what he can make of his perplexing condition. As he approaches, Koenig awakens and, as before, sees the alien in its true form squelching across the floor—a seven-foot-tall, slime-covered, pulsating heap of protoplasm resembling a Portuguese man o' war standing erect on its tentacles. He struggles against the restraints as the alien flops across his body and begins to smother the life out of him...