它们常出没于像海湾的浅水水域，世界上的海口处，有些种类甚至追溯到内河中。
They haunt shallow waters like bays and estuaries worldwide-and some species even ascend freshwater rivers.
横沙岛位于长江入海口的最东端，因横亘于长江口，故名横沙。
Hengsha Island is located in the easternmost part of the estuary of the Yangtze River. It's named by Hengsha Island because it's across the Yangtze River.
横沙岛位于长江入海口的最东端，因横亘于长江口，故名横沙。
Hengsha Island is located in the easternmost part of the estuary of the Yangtze River. It's named by Hengsha Island because it's across the Yangtze River.
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