Welcome to the NavList Message Boards.


A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding

Compose Your Message

Add Images & Files
    Re: Follow-up on bioluminescence
    From: Peter Fogg
    Date: 2010 Mar 23, 08:41 +1100
    The open ocean, far from land, presents mostly as sterile, with little fish life evident (although as in all else I have little doubt that there would be exceptions to this).  Schools of fish, generally speaking, are associated with shallow water, reefs and coastlines.

    On Tue, Mar 23, 2010 at 3:17 AM, Apache Runner <apacherunner@gmail.com> wrote:

    Dear All - 

    You may recall that we had some discussion about David Lewis' report of "underwater lightning" in "We the Navigators" some time back.   

    I finally got hold of an expert in bioluminescence and asked him about this - showing him the material from Lewis' book.   He said it sounds a lot like the effect one gets from a school of fish rapidly darting  - changing direction and inducing a "deep flash" associated with dinoflaggelate bioluminescence.      He said that he knows of this phenomenon - not described by Lewis, but in other contexts.  

    So, this makes sense, although I don't know how it indicates the presence of land.   I don't know a lot about how fish swim.

    John H. 

    Browse Files

    Drop Files


    What is NavList?

    Join NavList

    (please, no nicknames or handles)
    Do you want to receive all group messages by email?
    Yes No

    You can also join by posting. Your first on-topic post automatically makes you a member.

    Posting Code

    Enter the email address associated with your NavList messages. Your posting code will be emailed to you immediately.

    Email Settings

    Posting Code:

    Custom Index

    Start date: (yyyymm dd)
    End date: (yyyymm dd)

    Visit this site
    Visit this site
    Visit this site
    Visit this site
    Visit this site
    Visit this site