Deadly monsters of the deep

Oceanographers are busy mapping the powerful underwater eddies that have proved a major hazard to submarinersRows of tall buildings channel the breeze, turning streets into wind tunnels and creating whirlwinds. A similar effect underwater may be deadly. Tidal currents can produce giant whirlpools. Some, like the famous Maelstrom off the Norwegian coast, have been known as shipping hazards for centuries. Their destructive power feeds mythology; Maelstrom is the home of the mythical Kraken, which