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Flatworms
are really REALLY flat. |
Nudibranchs
and slugs are not so flat. |
Flatworms
tend to move faster. |
Nudibranchs
and slugs are not so fast. |
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Most
of the flatworms we see on our shores don't have 'real'
tentacles on their head. Most only have pseduotentacles
made out of folds of the body margin |
Nudibranchs
and slugs have 'real' tentacles. But these can be retracted
into the body, or may be small and obscured. |
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Flatworms
don't have flowery gills on their backs. |
Some
nudibranchs have flowery gills on their backs. But these
can be retracted into the body. Slugs and some other nudibranch,
however, do not have external flowery gills. |
Flatworms
are delicate and tear easily.
Don't pick them up. |
Nudibranch
are not as delicate, but it's still best not to pick them
up. |
Flatworms
are unsegmented worms belonging to Phylum Platyhelminthes. |
Nudibranchs
and slugs belong to Phylum Mollusca. |