How to make a rockpool viewer

Keep the kids busy on the beach this summer by helping them explore the wonderful world of rockpools. All you need is a plastic tub, clingfilm and gaffer tape ...

Illustrations by Alan Batley

All illustrations by Alan Batley

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1

Take a clean margarine or ice cream tub with a lid. Cut out the entire bottom panel, then the central section of the lid so just a frame remains.

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2

Cover the sides of the tub with gaffer tape, or paint them with waterproof black paint. This will prevent the light from getting in and reflecting off the water.

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3

Stretch cling film over the top of the tub, then replace the lid to hold it in position. You have now created a ‘window’. If the cling film tears, simply replace it.

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4

Find a rockpool with stones, crevices and hiding spots. Turn over stones to see what’s underneath, and insert your viewer, window-down, for a clear view of the bottom.

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