Slippery floor

I'm walking on the docks of Hong Kong. The sky dusk is showing a pleasant dark blue sunset colour. Something is bothering me though. For some reason, the floor is extremely slippery and I find myself slowly dragged towards the edge by the sea despite struggling to stay still. Eventually I fall off the edge but not quite: I managed to get a hang on a metal ring that is the size of a basketball. My feet are a few inches away from the water, and I'm looking desperately for help around me.