Box jellyfish box jellyfish's nervous system is more developed than that of many other jellyfish. They possess a nerve ring around the base of the bell that coordinates their pulsing movements, a feature found elsewhere only in the crown jellyfish. Whereas some other jellyfish have simple pigment-cup ocelli, box jellyfish are unique in the possession of true eyes, complete with retinas, corneas and lenses. Their eyes are set in clusters called rhopalia, located in pockets halfway up the outer, flat surfaces of the bell. Each contains two rhopalial ocelli with lenses, one directed upwards and the other downwards and inwards towards the
Jellyfish as food was reported that Japan had annually imported between 5,400 and 10,000 tons of edible jellyfish from Indonesia, Malaysia, Myanmar, the Philippines, Singapore, Thailand, and Vietnam. Dehydrated and pickled jellyfish is considered a delicacy in several Asian countries, including China, Korea, Taiwan, Vietnam, and Japan. A preparation method using dehydrated jellyfish involves re-hydrating the product by soaking it in water for several hours and then parboiling, rinsing and slicing it. Consuming echizen kurage is potentially dangerous if the toxic part is not thoroughly cleaned and cooked. Jellyfish salad, a popular dish in some areas of Asia, may be prepared using cold