20 How Sammy Went to Coral-Land 
of the different formation of their 
gills. 
One of these is a tropical fish called 
the Anabas. It has very strong Pectoral 
fins which it uses like feet when on land, 
and it will even climb trees to catch the 
insects which it eats. 
Another fish of this sort is the Frog- 
Fish, a hideous creature which is caught 
near Asia. It can crawl about a room, if 
shut up in one, and looks exactly like an 
ugly frog. 
But the most wonderful of all is a 
South American fish called the Hassar. 
It usually lives in pools of water inland, 
and if the pool where it is happens to 
dry up, it will travel a whole night over 
land in search of a new home. It is an 
experienced traveler, and is said to 
supply itself with water for its journey. 
If the Hassar finds all the pools and 
