THE SCHOOL OF THE SHORE 43 
has been made by a carnivorous Gasteropod 
called Natica, which has a boring gland on 
the underside of its proboscis. This gland is 
pressed against the bivalve shell and the 
sulphuric acid which it secretes dissolves a 
hole right through. When the perforation is 
made, the borer often uses its rasping ribbon 
to enlarge it. 
THE STORY OF THE ANGLER 
One of the queerest of queer fishes is the 
Angler or Fishing Frog (Lophius piscatorius) 
—a fish that fishes. It is rather a lazy crea- 
ture, of long pedigree, and of big appetite. In 
shallow water off-shore it often shuffles along 
with its strong fore-fins and settles down on 
an open space among the seaweed. Curious 
tags of skin about the head and body are very 
like waving fronds of seaweed, and that is all 
to the good. The first three fin-rays of the 
dorsal fin are long separate rods, and the first, 
which is particularly mobile, bears a lappet 
of skin dangling at the free end—the bait at 
the end of the angler’s line. Circumstantial 
evidence points to the conclusion that the 
angler really fishes with its fishing-rod. In 
