Sand beach

They are wonderful

Yellow-brown patches of small algae on a shallow soft bottom

On sunny days, the bottom living microalgae can produce so much oxygen that bubbles form.

Watch how algae move when magnified under a microscope.

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Figure 5

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Waves, bottoms and construction

Sand movement and erosion

Sand bottoms as living environments

The art of digging

Sand beach organisms

Food web

Change and variation

Swedish beach life

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© Aquascope 2000   Tjärnö Marine Biological Laboratory, Strömstad, Sweden
Bo Johannesson | Martin Larsvik | Lars-Ove Loo | Helena Samuelsson