CHAPTER II : SHARKS {continued). 



Orectolobid Sharks. Nurse Sharks. Whale Shark. Wob- 

 begongs or Carpet Sharks. Zebra Shark. Requin Sharks. 

 Blue Sharks. Tiger Shark. Topes. Hammer-head Sharks. 

 Spined Sharks. Greenland or Sleeper Shark. Bramble or 

 Spinous Shark. Angel- or Monk-fishes. 



ORECTOLOBID SHARKS. 



(Family Orectolobid.^.) 



Related to the Sand Sharks (Odontaspidae), but distin- 

 guished from them by having grooves connecting the mouth 

 with the nostrils, and by the position of the last 2 to 4 external 

 gill-clefts, which lie on either side above the base of the pectoral 

 fin. The two dorsal fins are placed well back on the body, 

 the first being above, a little in front of, or behind the level 

 of the pelvic fins. 



This family includes a number of different looking Sharks, 

 some large, others quite small. All are found in tropical and 

 subtropical seas. Fossil remains of Sharks believed to belong 

 to this family date back to the Jurassic period. 



