Marine mammals, underwater sounds and shipping noise

A neat talk by Peter Tyack at TED, entitled “The Intriguing Sound of Marine Mammals“, in which he explains the effect of human noise on the sounds made by marine mammals, and what’s being done to correct the situation. A few tidbits:

  • Better propeller designs decrease propeller noise by up to 90%
  • Insulating the engine chamber from the hull reduces engine noise by up to 99%
  • Slowing down the ships by 50% decreases overall noise and reduces fuel consumption by 30%

There’s also a cool cartoon at the end of the talk, called “Good Vibrations”, made by Jeremy Clapin.