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In this activity, learners discuss the different salinities of oceans, rivers and estuaries.

In this activity, learners are challenged to design a planktonic organism that will neither float like a cork nor sink like a stone.

In this outdoor, beach activity, learners use tennis balls, water balloons and other simple devices to investigate the movement of waves and currents off a sandy beach.

In this activity, learners interact with whale artifacts such as replicas of skulls, bones, teeth, and baleen (hair-like plates that form a feeding filter).