Hey Ferreter,
Sea spiders are indeed interesting animals. We have about 2 dozen species here in Puget Sound (Washington State). Not much is known of their habits. Ours mostly suck the juices of hydroids and sea anemones but according to the book by Kozloff ("Invertebrates") some feed on nudibranchs and the gills of mussels.
Roland

Roland C. Anderson, Puget Sound Biologist
The Seattle Aquarium
1483 Alaskan Way
Seattle WA 98101 USA
phone: 206-386-4359
See our website: www.seattleaquarium.org

>>> ferreter <[log in to unmask]> 10/09 7:30 PM >>>
Happy Saturday people,
I was a strolling through the October National Geographic and a short but
very interesting article was found in the earth Almanac section . Titled "
Nice Legs, but Not Just for Show"  ....
I will quote the article , " Crawling among corals , anemones, and sponges
to suck their juices , marine creatures called sea spiders range all oceans.
This one (referring to the image of a  pseudopallene to the left of the
article)  was photographed off Australia. But sea spiders have a problem.
Their bodies are so tiny-usually just a few millimeter in diameter- that
there isn't room for all their internal organs . so their legs serve as
auxiliary storage , housing part of their digestive and reproductive
systems.  Males carry females eggs on a special pair of legs called ovigers
, until they hatch . "
I was wondering if these bizarre creatures are ever found feasting upon
mollusks or bivalves? If there is anyone out there with a link for more
information on sea spiders I would appreciate . ferreter