On to Coral-Land 73 
then I have carefully avoided the society 
of all sharks, but what I have learned 
about them and their ways has been of 
great benefit to me, and will be a help to 
us now, since they prefer the warm 
waters of the tropics, and that is where 
we are bound. However, you may trust 
me to keep as far out of their course as 
possible. 
“ We will need to keep a sharp lookout 
for the Blue Shark, whom you have al¬ 
ready had the pleasure of meeting, and 
we may catch a glimpse of the Hammer¬ 
headed Shark, a terribly fierce monster 
with a head shaped like a hammer. 
“ But the enemy that I dread most of 
all is the Sword-Fish, so named from the 
long sword-shaped snout on his upper 
jaw. This sword is very strong, and so 
sharp that it will easily pierce a boat. 
The White Shark is bad enough, but the 
