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Oceans and Water

Science activity that models ocean acidification

Ocean Acidification in a Cup

A carbon dioxide–rich atmosphere changes the water beneath it.

Science activity that demonstrates the effects of ocean acidification

Shell Shifts

See why ocean acidification is giving some marine organisms shell shock.

Science activity measuring density of a liquid

Eyedropper Hydrometer

Construct a simple hydrometer to compare the densities of solutions.

Impressions of Life Sciences at the Exploratorium

Take an impressionistic journey through the Exploratorium's Life Sciences area.

Exploratorium at Pier 15: Green Machine

Get to know Pier 15, one of the greenest buildings around.

Building the Exploratorium at Pier 15: Timelapse

The Exploratorium wasn't built in a day—watch it go up in a minute.

Plankton Populations Exhibit

Use real data to learn about worldwide plankton populations.

King Tides and Climate Change

Help prepare for sea level rise by documenting King Tides.

Preserving our Wild Fish

Check out efforts to restore California’s native steelhead and salmon.

Tidal Bulge

Make a paper model that helps explain the changing tides.

Solar Tides

It's not just the moon that causes ocean tides.

Swell Swell

Want to understand how to predict when the good waves are coming to your shore? It helps to start with the basics behind the formation of ocean waves.