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Planktonic organism - identification request

Pszemol Pszemol at PolBox.com
Fri Mar 14 09:39:32 EST 2003

Anybody has any idea what can it be is more then welcome to tell me:
http://www.polbox.com/p/pszemol/WhatIsIt/UFO1.avi [1.9mb]
I catch several of these guys in the batch of rotifer feeders.
They grow quite fast, from the size smaller than rotifer, and
barely visible dots they grown to about 1-2 milimeters with
easily visible to the nacked eye four mobile "legs" (tentacles)
in about 2-3 days.
Whole creature looks like a bell with a visible grooved top
and four "muscles" moving four leg-like tentacles on the opposite
side (bell opening). The movie is very poor quality, but the
beginning is made with magnification of 60x while the second
part is made with magnification of 200x. At about 1min. 30 seconds
of the movie the creature rotates bending all 4 legs first, then
expanding them one by one. What can it be? Is this some kind of
larva of a bigger animal or just mutated & oversized rotifer? ;-)

Serwis Usenet w portalu Gazeta.pl -> http://www.gazeta.pl/usenet/

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