Worms, especially marine worms, are varied and many of them are unknown (see "New Species found on Whale Skeleton"). Now yet another pair of new species has been discovered. These ones live in caves.
An expedition by Tom Iliffe found several worms in total darkness, in a lava tube formed 20 000 years ago. They were found in sand on the cave floor. It's very nice there are more species out there, and the worms may be useful in comparative studies of how species evolve in marine caves.
The worms are in the polychaete class of annelid worms.
http://www.webnewswire.com/node/467756
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