Do Whales like Concrete Boats! - Page 2 - SailNet Community

   Search Sailnet:

 forums  store  


Quick Menu
Forums           
Articles          
Galleries        
Boat Reviews  
Classifieds     
Search SailNet 
Boat Search (new)

Shop the
SailNet Store
Anchor Locker
Boatbuilding & Repair
Charts
Clothing
Electrical
Electronics
Engine
Hatches and Portlights
Interior And Galley
Maintenance
Marine Electronics
Navigation
Other Items
Plumbing and Pumps
Rigging
Safety
Sailing Hardware
Trailer & Watersports
Clearance Items

Advertise Here






Go Back   SailNet Community > General Interest > General Discussion (sailing related)
 Not a Member? 


Reply
 
LinkBack Thread Tools
  #11  
Old 10-10-2010
tdw's Avatar
tdw tdw is offline
Super Fuzzy Moderator
 
Join Date: Oct 2006
Location: Sydney Australia
Posts: 14,400
Thanks: 5
Thanked 67 Times in 62 Posts
Rep Power: 10
tdw is a jewel in the rough tdw is a jewel in the rough tdw is a jewel in the rough
Interesting StAnna.....our antifouling is black and a year ot two back had an experience with a mother humpback and calf. Definitely a case of mama coming over to check us out and then getting junior to join the party when she figured we were 'mostly harmless'.
__________________
Andrew B

"Do you think God gets stoned? I think so... Look at the platypus." Robin Williams.
Reply With Quote Share with Facebook
  #12  
Old 10-10-2010
SlowButSteady's Avatar
Senior Slacker
 
Join Date: Feb 2010
Location: SoCal
Posts: 4,223
Thanks: 0
Thanked 17 Times in 15 Posts
Rep Power: 5
SlowButSteady is on a distinguished road
Quote:
Originally Posted by poopdeckpappy View Post
Toothed whales use sound for location and communication, baleen whales use sound for communication only. If you get tagged by a Blue ,Hump,gray or another baleen whales it merely a case of wrong place, wrong time. Ya tagged by a toothed whale that's a different story, they know you are there, may not know what's there, but they know something is
Not exactly. It used to be thought that mysticetes (baleen whales) couldn't echolocate at all, mainly because they lack the specialized anatomical structures used by odontocetes (toothed whales) for such, and because they don't produce the high-frequency tones once thought to be necessary. However, while it is true that they can't track down small objects (prey, etc.), it appears that at least some mysticete species probably use lower frequency sounds for navigating, such as finding the bottom and ice surfaces. The effect is probably similar to the way human blind individuals often use their own foot-falls or cane taps to detect large objects (walls, phone poles, etc.). Although rather crude by "normal" echolocation standards, such a system would be quite useful for whales in turbid and/or deep waters, or at night. However, I don't know if they could detect a small boat.
Reply With Quote Share with Facebook
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

 
Posting Rules
You may post new threads
You may post replies
You may post attachments
You may edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Concrete Catch smillinjack General Discussion (sailing related) 9 05-09-2010 02:09 PM
Concrete keels - any facts? kulokoo Sailboat Design and Construction 4 03-22-2010 05:11 PM
Putting cleats on concrete grinfax Gear & Maintenance 18 08-21-2008 08:22 AM
Structural expert's concrete home survived Katrina - Biloxi Sun Herald NewsReader News Feeds 0 04-29-2007 04:15 PM
New concrete Greenbelt path replaces bumpy asphalt (The Idaho Statesman) NewsReader News Feeds 0 08-14-2006 04:15 AM


All times are GMT -4. The time now is 10:23 AM.

Add to My Yahoo!         
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
SEO by vBSEO 3.6.1
(c) Marine.com LLC 2000-2012

The SailNet.com store is owned and operated by a company independent of the SailNet.com forum. You are now leaving the SailNet forum. Click OK to continue or Cancel to return to the SailNet forum.