Many underwater caves form in limestone due to the chemical weathering of the limestone by acidic ground water. One place that limestone caves form is in Bermuda where small pools of water form in the limestone caves. Many limestone caves also form in the Yucatan peninsula as well as Bahamas and Belize. Cave diving in these caves allows the unique animals of these areas to be studied. Usually animals in underground caves are placed into two categories. Those animals that adapt to the caves and those that complete their entire lives there. A primary environmental concern comes to about when limestone quarries destroy the habitat of these organisms. This has happened in the Bermudas where over half a dozen caves have been destroyed.
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