Its sonar confused by the labyrinth of giant webs spun across the inlet by the colonies of wolf spiders, it missed the wire hood above Kerans' head by only a few feet, and then sailed away along the line of submerged office blocks, gliding in and out of the huge sail-like fronds of the fern trees sprouting from their roofs. Suddenly, as it passed one of the projecting cornices, a motionless stone-headed creature snapped out and plucked the bat from the air. There was a brief piercing squawk and Kerans caught a glimpse of the crushed wings clamped in the lizard's jaws. Then the reptile shrank back invisibly among the foliage. All the way down the creek, perched in the windows of the office blocks and department stores, the iguanas watched them go past, their hard frozen heads jerking stiffly. They launched themselves into the wake of the cutter, snapping at the insects dislodged from the air-weed and rotting logs, then swam through the windows and clambered up the staircases to their former vantage points, piled three deep across each other.
