When the tide is in, limpets and periwinkles eat algae on the rocks. Periwinkles also eat seaweed. Students could be asked to consider the difficulties creatures face living in the rock pool ...

36.2 x 47 cm. (14.3 x 18.5 in.) Subscribe now to view details for this work, and gain access to over 18 million auction results. Purchase One-Day Pass ...