Jellies seem to be summer visitors. The main ones are moon jellies and not hugely venomous. There is another group of creatures that look like jellies, but have no sting. They are more frequent this time of year. I don't know what is on the park website. Sponges are not dangerous to us, but we are to them. Rays are only a problem if you step on them, so keep buoyant. If you don't touch stuff, you'll be fine. <img src="http://www.traveltalkonline.com/forums/images/graemlins/Wink.gif" alt="" />
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