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In this archaeology activity, learners consider ways in which excavating an underwater site is different from excavating a terrestrial site.

In this online Flash game, learners will explore a coral reef using an underwater remotely operated vehicle (ROV).

In this activity, learners create a map of a hidden surface using a "sounding stick" -- a technique similar to how underwater maps were once made.

In this archaeology activity, learners make observations and conduct an experiment to demonstrate the effect saltwater has on artifacts.