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Hill Master Guide Reged: 10/31/04 Posts: 9227 Loc: Southern California Re: Whale Protection Zone       10/11/07 11:30 PM Edit   Reply   Quote   Quick Reply   My understanding is that it is so noisy out there with all of the ship traffic, that the whales wouldn't respond and you can't exactly train them like dolphins. Sophisticated sonar could probably hear them, but active sonar may harm the whales' hearing, and you have to be quiet like a sub to be able to hear whales with passive sonar. Large bulk carriers have arrived in port with whales draped over their bulbous bows. The crew was not even aware of the whales until they floated free after the ship came to a stop in port. Speaking of sonar and whales, there is strong evidence that new powerful sonar used by the navy in training exercises causes whale and dolphin fatalities. There was recently an order from court to cease this practice, but the order was overturned by a higher court. The navy claims sensitivity to the problem, but is going ahead with training in places where cetaceans are active. Another perspective from National Geographic. Also here is the NRDC site. Post Extras

Entire topic Subject Posted by Posted on Whale Protection Zone danescombe 10/11/07 04:35 AM Re: Whale Protection Zone danescombe   05/02/08 01:37 PM Re: Whale Protection Zone geveN   12/28/07 02:14 PM Re: Whale Protection Zone Hill   10/11/07 09:57 AM Re: Whale Protection Zone Hale   10/11/07 04:13 PM Re: Whale Protection Zone Hill   10/11/07 11:30 PM Avoiding ship-whale collisions. Hale   11/10/07 02:39 AM Re: Whale Protection Zone Gerardo64   10/15/07 08:20 AM Re: Whale Protection Zone danescombe   10/11/07 11:59 PM Re: Whale Protection Zone TheLedge   10/11/07 05:03 AM

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