Page 16 - under-the-sea
P. 16

...

                                  shark    ฉลาม







      Sharks are a group of elasmobranch fish characterized by a cartilaginous


      skeleton, five to seven gill slits on the sides of the head, and pectoral fins

                                  that are not fused to the head.
   11   12   13   14   15   16   17   18   19   20   21