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Re: Great in the air, not so good underwater
----- Original Message -----
From: "don ohmes" <email@example.com>
Sent: Friday, December 08, 2006 2:51 PM
Subject: Re: Great in the air, not so good underwater
One of the objections I have heard to the 'ground-up' scenario of flight
origin; it seems to require that flapping capability/behavior precede the
ability to generate lift. I say "seems" because it is possible to
construct other scenarios.
Even so, if the hatchetfish is flapping but truly getting _no_ benefit,
that may be more interesting from a flight origin perspective than the
popular image of a flying fish w/ limited flight ability.
I think so too.
The key here may be what is really "significant" relative to lift
In the case of the hatchetfish, it would be appropriately phased pronation
and suppination of the flapping stroke. I doubt that it would take many
mutations to accomplish that. Average plunge axis would become important