Attack of the Blobs

Cnidarians are jelly fish. You know what they are: little (or big) pulsing animals you see under the docks down at the water front. That is, if you live near the sea. There are little cnidarians in fresh water but you can't really see them without a microscope.

But the characteristic feature of cnidarians is they live in water. Or, at least, we thought they did.

Turns out that they have a much broader range of form and locale once they hopped on the parasite train. Up to and including forms that look almost indistinguishable from nematode worms.

See here.