J. J. Vfvd. 



. \-|- HI-.KT1.I-. WHICH, \VHIN M<>YIV. AMONGST 

 THE .IVI-> A WASP-LIKE IMPRESSION 



HERMIT-CRAB WITH PARTNER SEA-ANEMONES 



Hermit-crabs hide their soft tail in the shell or a whelk or some 

 other sea-snail. But some hermit-crabs place sea-anemones on 

 the back of their borrowed shell. The sea-anemones mask the 

 hermit-crab and their tentacles can sting. As for the sea-anem- 

 ones, they are carried about by the hermit-crab and they get 

 crumbs from its table. This kind of mutually beneficial exter- 

 nal partnership is called commensalism, i.e. eating at the same 

 table. 



Photo: <,. J'. Duffus. 



(TCKOd -I'll 



The whit* mass in the centre of the picture is a soapy froth which the 

 young frog-hopper makes, and within which it lies safe both from the heat 

 of the un and almost all enemies. After sojourning for a time in the 



CUckoo-tnit. the frno-hnnrwr Kvcnmo* a n>;rm<.,1 : 



