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How to identify shark teeth
Search for teeth at the tide line and the shoreline.
Go to the beach at low tide and look for the line of debris in the sand. Walk slowly along this tide line as you keep your eyes peeled for teeth.
If the beach is busy, you might have more luck looking right where the waves are crashing into the shoreline so that you can snag teeth before others see them. Every now and then, dig up some of the sand along the tide line and/or shoreline and search through it for teeth.