Dear Conch-L,
I agree with Paul that the Fastest bivalves? is the Pectens probably (I am almost
sure). I have to add the following about Pectens, I though and I think many of
you that swimming to back side but I surprised when I saw swimming to the front
side.
In Cebu I turned a dead coral under was a Pecten pallium it surprise me, until to
catch it swim to the front side fast and go under other dead coral, I turned this
also and I catch it as this time I was faster.
In the room I putted it in a Tupperware with sea water and I took it nice shut
with view cam swimming in the front side, is very interesting.
Best regards.
George


[log in to unmask] wrote:

> Fastest mollusks?  Squid, far and away.  So fast that when they are swimming
> toward the surface, especially when being pursued by predators, they may leap
> out of the water and soar 30 to 50 feet, perhaps more.  I almost got nailed
> by one once when I was on a ship.  The thing slammed into the bulkhead
> (that's a wall, for you landlubbers) about ten feet from me.
> Fastest gastropods?  Seahares (family Aplysiidae) get my vote.  Some of them
> can outswim a diver with fins.
> Fastest bivalves?  Pectens probably.  When they clap their two shell valves
> together they can zigzag through the water at a pretty good clip, though I
> never saw one that could outswim me.
> Paul M.

--


_/  _/  _/  _/  _/  _/  _/ _/  _/  _/  _/  _/  _/  _/ _/  _/  _/  _/


George Sangiouloglou     http://www.geocities.com/~sangioul/
Xenofondos 40            http://members.xoom.com/sangioul/
Voula 16673              Phone +30 1 8955241  9659956
Athens Greece            Modem-Fax +30 1 8954507
                         mailto:[log in to unmask]

_/  _/  _/  _/  _/  _/  _/ _/  _/  _/  _/  _/  _/ _/ _/  _/  _/  _/