Bell animalcules are tiny unicellular organisms that belong to a group
called the ciliates.
Slightly larger flagellates and
small ciliates
prompt the spines to bend and curl so as to entangle the prey more thoroughly.
Other ciliates
have thick round bundles of cilia called cirri which act like legs and enable the organism to actually walk over a surface.
I discovered the
largest ciliate
yet apparently a species of paramecium probably over 300 μm in length.
An ameba, however, does not feed entirely on plants it is also carnivorous feeding on
tiny ciliates.
For this, a
typical ciliate
has the cilia arranged in rows.
Most ciliates
are quite small, e.g. paramecium, a typical ciliate, is about 0.3 mm long.
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