Just found this on the net
How do gelatinous animals eat?
* *Imagine trying to eat your dinner without any teeth or jaws. *In fact, what if you didn't have any hard parts (like our skeleton) in your body. *Capturing living prey and consuming it without getting torn apart could be a challenge! *That's why the cnidarian jellies use the stinging nematocysts, and why they can be such a pain (literally!). *By using various types of toxins, the true jellies can immobilize zooplankton prey like krill, copepods, larval fish and even other gelatinous animals. *The long, thin tentacles, often not visible to potential prey, are studded with batteries of nematocysts. *By drifting with extended tentacles in areas of high prey density, food items that contact the tentacles are stunned and killed by the nematocysts. *Other nematocysts function more to hold on to the prey. * Once subdued, the prey can then be brought to the mouth, and into the stomach for digestion. *With their transparent bodies, it's often easy to see what a jelly has recently consumed.
* *Other gelatinous animals lack nematocysts and have devised other methods for acquiring food. *Some comb jellies (the "sea gooseberries"

employ a pair of sticky tentacles to ensnare small zooplankton prey. * Another group, the lobate comb jellies, utilize a pair of mucous-covered oral lobes to funnel zooplankton into the waiting mouth. *Perhaps the most amazing comb jelly feeders are the various species of Beroe. *Pity the poor comb jelly that encounters one of these voracious beasts. *Gluttonous to the max, certain Beroe can engulf ctenophores up to their own size, or even larger! *Despite what most of us think about mucus (yuck!), it plays a valuable role for many gelatinous snails and tunicates. *Certain planktonic snails known as pteropods produce sticky mucous webs that effectively capture zooplankton prey. *Other types of pteropods, and another gastropod group known as heteropods, are more active predators. *With well developed swimming ability and relatively complex mouthparts they seek out gelatinous fare. *Pelagic tunicates also take advantage of the stickiness of mucus, using it in a variety of ways to collect tiny zooplankton and phytoplankton (microscopic algae).
Good Luck HL14 ................. John