In the next few days Oahu will start to get jelly fish coming to one of the shores. It depends on the trade winds but they usually come to either the south shore, Waikiki side, or more towards the East, Hanauma Bay side. When they do arrive here there are always staff from the State who section off and area of about 30 feet and then collect as many jellyfish as they can find. After counting all of them they then use some special calculations to come up with a fairly accurate estimate of how many there are. In Hanauma Bay, if even one person gets stung the beach is closed. In Waikiki, the life guards will put up signs but it is up to the person on whether to go into the water or not. The sting can be very painful but is not considered dangerous except for those with allergies. The jelly fish are usually gone after a day or so. While they are here one can see the green sea turtles eating them as they have a special coating on their throats that prevents them from being stung.