THE SCHOOL OF THE SHORE 3 



I. THE SHORE OF THE SEA (Littoral). 

 II. THE OPEN SEA (Pelagic). 



III. THE DEPTHS OF THE SEA (Abyssal). 



IV. THE FRESH WATERS (Fluviatile, Lacus- 



trine, etc.). 



V. THE DRY LAND (Terrestrial). 

 VI. THE Am (Aerial). 



THE SHORE OF THE SEA 



By the shore-haunt or littoral region natural- 

 ists mean more than is suggested in ordinary 

 conversation when we speak of the seashore. 

 For then we mean the stretch between tide- 

 marks, whereas the naturalist's shore-haunt 

 is the whole of the comparatively shallow, 

 well-lighted, seaweed-growing area round the 

 margin of a continent, or of an island that 

 was once part of a continent. There are 

 places where there is practically no shore ; for 

 instance round an oceanic island that has been 

 formed by corals growing on the shoulders 

 of a submarine volcano. In such a place a 

 stone thrown out from the land will drop 

 kerblunkity blink into really deep water. 

 And there are other places where the shore 

 goes out and out for many miles ; for instance, 



