26 



Hawaiian Fishes 



basking. They are voracious in their habits and enjoy a bad reputation. 

 They are thought to feed mainly on bottom dwelHng fishes, crabs, squids, 

 and possibly carrion. There are reports of two female sharks which con- 

 tained thirty-one and thirty-two embryos respectively. 



The flesh of these sharks is fine grained and is relished by the Japanese 

 people. 



This shark is found throughout all of the tropical and temperate seas 

 of the world. It is common in Hawaiian waters, the South Seas, and in 

 Japan. It is occasionally taken in California. 



Hammer-Head Shark 

 6-2 Sphyrna tudes (Valenciennes) 

 This shark resembles the common hammer-head shark found in 

 Hawaiian waters. It is a circumtropical species and is difficult to identify. 

 It differs from the common hammer-head shark by having a slightly 

 narrower head, no concavity over the nostrils, and by having the nasorial 

 groove short or absent. In color, it is grayish above and pale below. It 

 seems to be a smaller species than the common hammer-head shark. It 

 is known from all tropical seas. 



THE DOG SHARK FAMILY 



Also known as the Dogfish or Skittle Dog Family 



7 Family Squalidae 



The dogfish sharks are all rather small in size and dull in color. They 



are a fairly primitive group and still lay eggs in bringing forth their 



young. In addition to being oviparous, they lack the anal fin the same 



as the rays do. They may often be recognized by the stout spine on the tail. 



