Like hockey, except played on the bottom of a pool. Flippers, snorkels, fins, gloves, sticks, it honestly sounds pretty intense. The Shanghai Azures are the only underwater hockey team in the city (as far as we know). They apparently had the first underwater hockey tournament in China back in 2015. Bring your swimming suits, goggles, caps. If you have fins, snorkels and masks, bring them as well.