One is illustrated by a bathysphere, the miniature submarine used to explore the ocean in places so deep that the water pressure would crush a conventional submarine like an aluminum can. Bathyspheres compensate with plate steel several inches thick, which keeps the water out but also makes them heavy and hard to maneuver. Inside they're not alone. These fish cope with extreme pressure in an entirely different way. They compensate for the outside pressure through equal and opposite pressure inside themselves.
Countless icebergs float in the frigid waters around Greenland.
At times the small ones move in one direction while their gigantic counterparts go in another. The small ones are subject to surface winds, but the huge ice masses are carried along by deep ocean currents. The Hope College Women's basketball team had made it to the national playoffs. The final game saw Hope 20 points behind with 10 minutes left to play. The team remained calm and began to narrow the gap.