Mercado Modelo sells anything under the sun like this for 1/3 the price you'll pay from a beach vendor.
You stiil need to bargain.
5 minutes walk North West from Parque Independencia.
Probably not a great idea anyway.
Turtles carry salmonella.
Besides, let them live a free life, not in a bowl soon to be left to die from hunger in filthy water.
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