32 



THE SEA SHORE 



should be carried on as near the water's edge as possible, closely 

 following the receding tide ; and the collector must now be 

 prepared with a number of small bottles or tins for the isolation 

 of small and delicate specimens. He must also be on the alert for 

 numerous examples of protective resemblance, in which the 

 animals concerned so closely resemble their surroundings in 

 colour and general character of surface that they are detected only 

 by careful observation, while the difficulty of identification is still 



FIG. 22. A YOUNG NATUBALIST AT WOBK 



further increased in instances where the creatures remain perfectly 

 still even when disturbed. 



Under the stones all manner of animals fishes, crustaceans, 

 worms, molluscs, starfishes, anemones, &c. will be hiding until 

 covered by the next tide. Some of these will be found on the 

 ground beneath the stones, and others attached to the under 

 surfaces of the stones themselves ; therefore both should be care- 

 fully examined, attention being given at first to the more active 

 species that hurry away with all speed towards a new shelter as 

 soon as they find themselves exposed to the light ; the less active 

 creatures may then be secured at leisure. 



