At first I thought this lamp does not work, because it lights up but makes no sound, also the jellyfish floats up. I followed another buyer's advice and kept squeezing them with the included straw (actually I attached a regular straw to it to get more length). In the end this thing worked fine after about a week. Now jellyfish are swimming beautifully and are so cool to look at. You look super real! I am very satisfied so far.
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