I have been to Dalian Underwater World before, Harbin Poseidon Underwater World is more interesting! Although not big but very interesting! The design style is very similar to the Haishen Land Palace in the cartoon SpongeBob SquarePants. There are also dolphin shows and mermaid shows (artificially played). Water World should be more fun, but I didn't go, it is estimated that there are more people, two places are next to each other, but I think the time to play together is more tight. I sent a performance schedule for your reference.