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

$5 - $10 per group Ages 8 - adult 1 to 7 days
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In this activity, learners explore how salt water freezes in comparison to fresh water.

1 cent - $1 per group Ages 6 - 14 1 to 2 hours
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In this activity, learners make a model of the hot water of a deep sea vent in the cold water of the ocean to learn about one of the ocean's most amazing and bizarre underwater habitats.

1 cent - $1 per group Ages 8 - 14 5 to 10 minutes